The timezone-boundary-builder from evansiroky

2016j

Add new zones:

Asia/Atyrau
Europe/Saratov

adding "\n" to .json for parseability

IMO it would be nice to add newline characters to the .json (after every tz or even polygon).
I am trying to parse it with python atm and with the file just having one line this is way more complicated.
With 120MB a few more characters wouldn't hurt I think. Or are there any cases where having just one line is helpful?

GMT offsets in seas/oceans reversed

Just as an example (see image below), Asia/Baku (pink) is in GMT+4 while the timezone covering the adjacent Caspian Sea (green) shows Etc/GMT-3. I think the signs for water areas must be reversed to positive (+) in easterly direction and negative (-) the way around in order to comply with other (land) time zones.

https://i.imgur.com/ZG6q0um.jpg

Zone IDs switched in Greenland

Hey,
thanks for your great work!
I found a small issue in the shp release with oceans: The tzid's of two polygons in Greenland are switched: America/Danmarkshavn and America/Scoresbysund. America/Danmarkshavn should be the more northern one.

Greetings

Asia/Shanghai and Asia/Urumqi

From my reading of Xinjiang Time, it seems to me that Asia/Shanghai and Asia/Urumqi should overlap, since both time zones are in use in Xinjiang.

I'm guessing this is a deliberate choice, but maybe there should be some alias zone created for Asia/Shanghai that includes the entire zone?

Update to 2018c.

Hi, would it be possible to update to 2018c any time soon?

Africa/Johannesburg

I happened to notice that the polygons for Africa/Johannesburg contain an odd vertical slice of Antarctica. I doubt that's intentional, but I could be mistaken.

Golang wrapper for timezone lookup

Thanks for compiling this data, it has been really useful.

I am using it on a project written in Golang, the source of the timezone lookup API is at: https://github.com/evanoberholster/timezoneLookup

Feel free to add it to the list of libraries if it will be useful.

Cheers!

2016i

Add new zone for Asia/Famagusta

Add list of timezone lookup libraries to the README

Create builder config for all timezones

Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau
Africa/Blantyre
Africa/Brazzaville
Africa/Bujumbura
Africa/Cairo
Africa/Casablanca
Africa/Ceuta
Africa/Conakry
Africa/Dakar
Africa/Dar_es_Salaam
Africa/Djibouti
Africa/Douala
Africa/El_Aaiun
Africa/Freetown
Africa/Gaborone
Africa/Harare
Africa/Johannesburg
Africa/Juba
Africa/Kampala
Africa/Khartoum
Africa/Kigali
Africa/Kinshasa
Africa/Lagos
Africa/Libreville
Africa/Lome
Africa/Luanda
Africa/Lubumbashi
Africa/Lusaka
Africa/Malabo
Africa/Maputo
Africa/Maseru
Africa/Mbabane
Africa/Mogadishu
Africa/Monrovia
Africa/Nairobi
Africa/Ndjamena
Africa/Niamey
Africa/Nouakchott
Africa/Ouagadougou
Africa/Porto-Novo
Africa/Sao_Tome
Africa/Tripoli
Africa/Tunis
Africa/Windhoek
America/Adak
America/Anchorage
America/Anguilla
America/Antigua
America/Araguaina
America/Argentina/Buenos_Aires
America/Argentina/Catamarca
America/Argentina/Cordoba
America/Argentina/Jujuy
America/Argentina/La_Rioja
America/Argentina/Mendoza
America/Argentina/Rio_Gallegos
America/Argentina/Salta
America/Argentina/San_Juan
America/Argentina/San_Luis
America/Argentina/Tucuman
America/Argentina/Ushuaia
America/Aruba
America/Asuncion
America/Atikokan
America/Bahia
America/Bahia_Banderas
America/Barbados
America/Belem
America/Belize
America/Blanc-Sablon
America/Boa_Vista
America/Bogota
America/Boise
America/Cambridge_Bay
America/Campo_Grande
America/Cancun
America/Caracas
America/Cayenne
America/Cayman
America/Chicago
America/Chihuahua
America/Coral_Harbour
America/Costa_Rica
America/Creston
America/Cuiaba
America/Curacao
America/Danmarkshavn
America/Dawson
America/Dawson_Creek
America/Denver
America/Detroit
America/Dominica
America/Edmonton
America/Eirunepe
America/El_Salvador
America/Fort_Nelson
America/Fortaleza
America/Glace_Bay
America/Godthab
America/Goose_Bay
America/Grand_Turk
America/Grenada
America/Guadeloupe
America/Guatemala
America/Guayaquil
America/Guyana
America/Halifax
America/Havana
America/Hermosillo
America/Indiana/Indianapolis
America/Indiana/Knox
America/Indiana/Marengo
America/Indiana/Petersburg
America/Indiana/Tell_City
America/Indiana/Vevay
America/Indiana/Vincennes
America/Indiana/Winamac
America/Inuvik
America/Iqaluit
America/Jamaica
America/Juneau
America/Kentucky/Louisville
America/Kentucky/Monticello
America/Kralendijk
America/La_Paz
America/Lima
America/Los_Angeles
America/Lower_Princes
America/Maceio
America/Managua
America/Manaus
America/Marigot
America/Martinique
America/Matamoros
America/Mazatlan
America/Menominee
America/Merida
America/Metlakatla
America/Mexico_City
America/Miquelon
America/Moncton
America/Monterrey
America/Montevideo
America/Montreal
America/Montserrat
America/Nassau
America/New_York
America/Nipigon
America/Nome
America/Noronha
America/North_Dakota/Beulah
America/North_Dakota/Center
America/North_Dakota/New_Salem
America/Ojinaga
America/Panama
America/Pangnirtung
America/Paramaribo
America/Phoenix
America/Port_of_Spain
America/Port-au-Prince
America/Porto_Velho
America/Puerto_Rico
America/Rainy_River
America/Rankin_Inlet
America/Recife
America/Regina
America/Resolute
America/Rio_Branco
America/Santarem
America/Santiago
America/Santo_Domingo
America/Sao_Paulo
America/Scoresbysund
America/Sitka
America/St_Barthelemy
America/St_Johns
America/St_Kitts
America/St_Lucia
America/St_Thomas
America/St_Vincent
America/Swift_Current
America/Tegucigalpa
America/Thule
America/Thunder_Bay
America/Tijuana
America/Toronto
America/Tortola
America/Vancouver
America/Whitehorse
America/Winnipeg
America/Yakutat
America/Yellowknife
Antarctica/Macquarie
Arctic/Longyearbyen
Asia/Aden
Asia/Almaty
Asia/Amman
Asia/Anadyr
Asia/Aqtau
Asia/Aqtobe
Asia/Ashgabat
Asia/Baghdad
Asia/Bahrain
Asia/Baku
Asia/Bangkok
Asia/Barnaul
Asia/Beirut
Asia/Bishkek
Asia/Brunei
Asia/Chita
Asia/Choibalsan
Asia/Chongqing
Asia/Colombo
Asia/Damascus
Asia/Dhaka
Asia/Dili
Asia/Dubai
Asia/Dushanbe
Asia/Gaza
Asia/Harbin
Asia/Hebron
Asia/Ho_Chi_Minh
Asia/Hong_Kong
Asia/Hovd
Asia/Irkutsk
Asia/Jakarta
Asia/Jayapura
Asia/Jerusalem
Asia/Kabul
Asia/Kamchatka
Asia/Karachi
Asia/Kashgar
Asia/Kathmandu
Asia/Khandyga
Asia/Kolkata
Asia/Krasnoyarsk
Asia/Kuala_Lumpur
Asia/Kuching
Asia/Kuwait
Asia/Macau
Asia/Magadan
Asia/Makassar
Asia/Manila
Asia/Muscat
Asia/Nicosia
Asia/Novokuznetsk
Asia/Novosibirsk
Asia/Omsk
Asia/Oral
Asia/Phnom_Penh
Asia/Pontianak
Asia/Pyongyang
Asia/Qatar
Asia/Qyzylorda
Asia/Rangoon
Asia/Riyadh
Asia/Sakhalin
Asia/Samarkand
Asia/Seoul
Asia/Shanghai
Asia/Singapore
Asia/Srednekolymsk
Asia/Taipei
Asia/Tashkent
Asia/Tbilisi
Asia/Tehran
Asia/Thimphu
Asia/Tokyo
Asia/Tomsk
Asia/Ulaanbaatar
Asia/Urumqi
Asia/Ust-Nera
Asia/Vientiane
Asia/Vladivostok
Asia/Yakutsk
Asia/Yekaterinburg
Asia/Yerevan
Atlantic/Azores
Atlantic/Bermuda
Atlantic/Canary
Atlantic/Cape_Verde
Atlantic/Faroe
Atlantic/Madeira
Atlantic/Reykjavik
Atlantic/South_Georgia
Atlantic/St_Helena
Atlantic/Stanley
Australia/Adelaide
Australia/Brisbane
Australia/Broken_Hill
Australia/Currie
Australia/Darwin
Australia/Eucla
Australia/Hobart
Australia/Lindeman
Australia/Lord_Howe
Australia/Melbourne
Australia/Perth
Australia/Sydney
Europe/Amsterdam
Europe/Andorra
Europe/Astrakhan
Europe/Athens
Europe/Belgrade
Europe/Berlin
Europe/Bratislava
Europe/Brussels
Europe/Bucharest
Europe/Budapest
Europe/Busingen
Europe/Chisinau
Europe/Copenhagen
Europe/Dublin
Europe/Gibraltar
Europe/Guernsey
Europe/Helsinki
Europe/Isle_of_Man
Europe/Istanbul
Europe/Jersey
Europe/Kaliningrad
Europe/Kiev
Europe/Kirov
Europe/Lisbon
Europe/Ljubljana
Europe/London
Europe/Luxembourg
Europe/Madrid
Europe/Malta
Europe/Mariehamn
Europe/Minsk
Europe/Monaco
Europe/Moscow
Europe/Oslo
Europe/Paris
Europe/Podgorica
Europe/Prague
Europe/Riga
Europe/Rome
Europe/Samara
Europe/San_Marino
Europe/Sarajevo
Europe/Simferopol
Europe/Skopje
Europe/Sofia
Europe/Stockholm
Europe/Tallinn
Europe/Tirane
Europe/Ulyanovsk
Europe/Uzhgorod
Europe/Vaduz
Europe/Vatican
Europe/Vienna
Europe/Vilnius
Europe/Volgograd
Europe/Warsaw
Europe/Zagreb
Europe/Zaporozhye
Europe/Zurich
Indian/Antananarivo
Indian/Chagos
Indian/Christmas
Indian/Cocos
Indian/Comoro
Indian/Kerguelen
Indian/Mahe
Indian/Maldives
Indian/Mauritius
Indian/Mayotte
Indian/Reunion
Pacific/Apia
Pacific/Auckland
Pacific/Bougainville
Pacific/Chatham
Pacific/Chuuk
Pacific/Easter
Pacific/Efate
Pacific/Enderbury
Pacific/Fakaofo
Pacific/Fiji
Pacific/Funafuti
Pacific/Galapagos
Pacific/Gambier
Pacific/Guadalcanal
Pacific/Guam
Pacific/Honolulu
Pacific/Johnston
Pacific/Kiritimati
Pacific/Kosrae
Pacific/Kwajalein
Pacific/Majuro
Pacific/Marquesas
Pacific/Midway
Pacific/Nauru
Pacific/Niue
Pacific/Norfolk
Pacific/Noumea
Pacific/Pago_Pago
Pacific/Palau
Pacific/Pitcairn
Pacific/Pohnpei
Pacific/Port_Moresby
Pacific/Rarotonga
Pacific/Saipan
Pacific/Tahiti
Pacific/Tarawa
Pacific/Tongatapu
Pacific/Wake
Pacific/Wallis
Pacific/Yap

2017b

2017b is just released!

Announcement - http://mm.icann.org/pipermail/tz-announce/2017-March/000046.html

Haiti resumed observance of DST in 2017
Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01
Use "MMT" to abbreviate Liberia's time zone before 1972

I guess, only Haiti change is required now?!

Option to build timezone map without territorial water?

Is it possible?

Parse error

I was hoping to build this into a Gradle plugin to automate downloading timezone data into an Android app (along with another library to convert to Java) but ran into an error running the script per instructions in readme:

getting data for Argentina
downloading from overpass
waiting 4 seconds
Success, decreasing overpass request gap
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
combining border
error converting geojson to geometry
error converting overpass result to geojson
n {}

/Users/phil/.../timezone-boundary-builder/index.js:210
            throw e
            ^
[object Object]

Fix Viedma Glacier area again

The borders in OSM in this area have changed again and the boundary building process needs to be fixed. This should be the last blocking issue before 2018d is released.

2018g

when will 2018e come out?

there's PYT → KST change for North Korea

Update to canonical names

One of my users pointed out that my library is returning Asia/Rangoon instead of Asia/Yangon for locations in Myanmar. mattjohnsonpint/GeoTimeZone#28

This appears to stem from the data in the timezones.json file here.

Could you please check that the time zone ids are all canoncialized to the current Zone entries instead of Link entries?

Thanks.

Remove or add note in README section "How is this different..."

The website at http://efele.net/maps/tz/ says that the maps there are no longer maintained and directs visitors to this project as an alternative.

I think that the section of the README "How is this different from the shapefile over at efele.net?" should either be removed, since it is no longer so relevant, or a note should be added that the other project says to use this one.

Refactor Northeastern Arizona boundaries

There's been a report at https://github.com/darkskyapp/tz-lookup/issues/7 that the town of Page, AZ is resolving to America/Denver when it should be America/Phoenix.

As of right now, it appears that the area around Page, AZ relies on data that was imported into OpenStreetMap from the efele.net shapefile. The shaded area is America/Phoenix.

I've read a few online articles here and there that suggest that Page, AZ and surrounding areas should be in America/Phoenix. So, I'm creating this issue to try and figure out the best way to draw the boundaries in Northeastern Arizona. Shown below are the current boundaries:

All of the shaded area is America/Phoenix and the unshaded is America/Denver. In OSM, the boundary appears to be an import of the efele.net shapefile outlining the boundary of the Navajo Nation enclaving the Hopi Reservation. Unfortunately, I'm not sure if an OSM relation exists for either the Navajo Nation or Hopi Reservation.

Add description entries to all manual geometries

Oceans not covered

Hi,
is there a way to merge with timezones on water? Die Oceans are covered with timezone stripes aswell and i'd need them.

Flo

Error generating France

I am getting an error when processing data for France (all preceding regions consistently work as expected). The error is repeatable when resuming the script. If I delete other regions generated json files (in downloads directory) and resume the script the deleted regions are correctly generated and the script fails on France again.

getting data for France
downloading from overpass
waiting 4 seconds
Success, decreasing overpass request gap
/Users/eric_hansen/dev/timezone-boundary-builder/node_modules/jsts/dist/jsts.min.js:17
if(null!==t._sym||null!==e._sym||null!==t._next||null!==e._next)throw new IllegalStateException("Edges are already initialized");return t.init(e),t},Li.create=function(t,e){var n=new Li(t),i=new Li(e);return n.init(i),n},ro(wi,Li),io(wi.prototype,{mark:function(){this._isMarked=!0},setMark:function(t){this._isMarked=t},isMarked:function(){return this._isMarked},interfaces_:function(){return[]},getClass:function(){return wi}}),wi.setMarkBoth=function(t,e){t.setMark(e),t.sym().setMark(e)},wi.isMarked=function(t){return t.isMarked()},wi.setMark=function(t,e){t.setMark(e)},wi.markBoth=function(t){t.mark(),t.sym().mark()},wi.mark=function(t){t.mark()},io(Ri.prototype,{insert:function(t,e,n){var i=this.create(t,e);null!==n?n.insert(i):this.vertexMap.put(t,i);var r=this.vertexMap.get(e);return null!==r?r.insert(i.sym()):this.vertexMap.put(e,i.sym()),i},create:function(t,e){var n=this.createEdge(t),i=this.createEdge(e);return Li.

TypeError: Cannot read property 'getGeometryType' of undefined
    at Fi.write (/Users/eric_hansen/dev/timezone-boundary-builder/node_modules/jsts/dist/jsts.min.js:17:10307)
    at qi.write (/Users/eric_hansen/dev/timezone-boundary-builder/node_modules/jsts/dist/jsts.min.js:17:13980)
    at geomToGeoJsonString (/Users/eric_hansen/dev/timezone-boundary-builder/index.js:110:39)
    at asynclib.auto.saveSingleMultiPolygon (/Users/eric_hansen/dev/timezone-boundary-builder/index.js:187:38)
    at runTask (/Users/eric_hansen/dev/timezone-boundary-builder/node_modules/async/dist/async.js:1619:13)
    at /Users/eric_hansen/dev/timezone-boundary-builder/node_modules/async/dist/async.js:1559:13
    at processQueue (/Users/eric_hansen/dev/timezone-boundary-builder/node_modules/async/dist/async.js:1569:13)
    at taskComplete (/Users/eric_hansen/dev/timezone-boundary-builder/node_modules/async/dist/async.js:1588:9)
    at /Users/eric_hansen/dev/timezone-boundary-builder/node_modules/async/dist/async.js:1612:17
    at /Users/eric_hansen/dev/timezone-boundary-builder/node_modules/async/dist/async.js:906:16

how are the sources built?

How is osmBoundarySources.json generated, is it done by hand?

Great project - thanks!

Upload to Wikipedia

Hi Evan,

I think your rendering of the time zone maps would fit better than the older image of the tz_world data shown on Wikipedia here: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones

Would you either please grant permission to release the rendered image under one of the Creative Commons licenses accepted on Wikimedia Commons, or perhaps just upload it there yourself?

Thanks a lot.
-Matt

Asia/Shanghai Asia/Taipei overlap

Those overlap are not necessary. These islands are disputed, but they are just being disputed in the same way as the entire territory of Taiwan is being disputed.

error converting geojson to geometry

node --max-old-space-size=8192 index.js
....[some expected output]...
getting data for Atikokan-tz
downloading from overpass
waiting 4 seconds
Success, decreasing overpass request gap
combining border
error converting geojson to geometry
error converting overpass result to geojson

/timezone-boundary-builder/index.js:202
throw e
^
[object Object]

Enviroment:
Windows 10
node --version
v6.9.4
EDIT: File: debug_geojson_read_error.json contains a Polygon representing the border of Atikokan timezone

Add Antarctica Zones

These will be made with manually created polygons using this Wikipedia article as a reference.

Asia/Krasnoyarsk and America/Santiago: Fail to select the areas

Hi there,

When opening the shapefile in Google Earth v7.3.3832 and selecting any timezone area, GE normally navigates to that area showing tzid under the left-side 'Places' window. But this is only partially true for Asia/Krasnoyarsk - in fact, only a group of island polygons are visible/selectable while the rest of the Krasnoyarsk Krai remains in focus but without any noticeable polygon boundaries. No navigation is possible. I wonder if the issue is somehow related to unclosed polygon?

EDIT: I have the same issue with continental Chile (America/Santiago) except a group of Pacific islands lying westwards the country.

See the image: https://i.imgur.com/EJaYdLE.jpg

Thanks!

Pacific/Auckland

The bounding box for Pacific/Auckland seems to be incorrect:

-29.03033,-179.059153
-29.03033,179.364359
-52.821369,179.364359
-52.821369,-179.059153
-29.03033,-179.059153

Incorrect border along America/Argentina/Catamarca and America/Argentina/Rio_Gallegos

The calculations used to create America/Argentina/Rio_Gallegos incorrectly assume that the border to America/Argentina/Catamarca is always along the 46° S latitude when in fact it is not although the difference is very small. Therefore, there is actually very small gap in certain areas and very small overlap in others.

2017a

New Zone America/Punta_Arenas
Four Alabama towns by GA border observe Eastern time
Manually build America/Chicago from states and county boundaries
Manually build America/Mexico_City
Figure out what is wrong w/ Syria boundary
Figure out what is wrong w/ Turkey boundary
Resolve Asia/Chita - Asia/Irkutsk overlap
Resolve Europe/Belgrade - Europe/Zagreb overlap
Patch area in Asia/Kashgar

Mexico Beach, FL resolving to America/New_York

See https://github.com/darkskyapp/tz-lookup/issues/14

Mexico Beach, FL is in the Central timezone, but tz-lookup incorrectly returns America/New_York:

tz(29.941389, -85.406389)
'America/New_York'

Node version in readme

The readme states:

The script has only been verified to run with Node.js 6 on the MacOS platform

Is this still true? Node has evolved considerably. I don't expect folks running the script would want to downgrade. Node 6 (Boron) is still in "Maintenance LTS" status, but not for much longer.

Thanks.

Groupsing Island Chains

First of all, let me say THANK YOU very much for creating this! This seems like a much more viable and accurate option than efele.net maps. In particular, I love that you've included territorial waters, as this eliminates all the complex shoreline data in Alaska and Canada (for example).

However, I'm curious if something more can be done in defining territorial waters better for island chains? For example, the waters in the Hawaiian Islands are all probably in the Pacific/Honolulu time zone, but since the territorial waters are drawn around the individual islands, only the areas where the boundaries overlap are merged. There's a small gap between Maui and Hawaii and a larger gap between Oahu and Kauai that should also be considered part of these waters, IMHO.

Same goes for Micronesia, Marshall Islands, and many other places.

Any thoughts on how to reconcile this without manually drawing polygons? I really like the approach of using OpenStreetMaps as a primary source.

ogr2ogr: Couldn't fetch requested layer 'OGRGeoJSON'!

Trying to run in on latest MacOS.

Handling of timezones in China

The Asia/Urumqi in Southern China should be removed. As the original coloring of that zone were based on dubious historical message, and more importantly no one in that area would actually use UTC+6, which is the current value for that Asia/Urumqi zone, therefore that area should not be Asia/Urumqi.
I can't find any sources for anyone in Tibet and Qinghai area use UTC+6 time, as such it might not be appropriate to color them as Asia/Urumqi or Asia/Kashgar.
Because more than one time are used by different population in Xinjiang, I suggest coloring that area with strips of UTC+6 and UTC+8.
perhaps Asia/Kashgar, Asia/Harbin and Asia/Chongqing should be completely removed from the map as their existence in tz.db is only for legacy reason.

About shape file to geojson

i want to find a way to produce the geojson file from your shapefile.

but i find that ,the tool from the web or ogr2ogr can not produce the same content compared with your shapfile.geojson.zip released on the web.
EG:
The geojson i produced (the same shapefile) :
{ "tzid": "Africa/Abidjan" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -5.440683, 4.896553 ], [ -5.555659, 4.882248 ]...
-- WGS84

different with your data
{"tzid":"Africa/Abidjan"},"geometry":{"type":"Polygon","coordinates":[[[-5.440683,4.896553],[-5.303699,4.912035]

Can you tell me which way you used to produce the geojson file

Thanks.

request for a smaller version of the combined.json

For some applications it might not be feasible to have a 120MB .json file as data basis.
With certain simplifications and tricks it should theoretically be possible to compress the data to around 7MB (cf. timezonefinderL data, consisting of simplified tz_world data).

Without trying to go into those extremes the question is how reduce data size while still keeping an acceptable level of accuracy.

Next release

@evansiroky do you have any plan to releases? I need some fixes from master and I am interesting should wait release from you or build release by myself.

Better model disputed territories in Doklam area

Hello,
I noticed that there is a hole at 89.0714, 27.5442 for the 2018d release of timezones.shapefile.zip vs timezones-with-oceans.shapefile.zip. I assume that this is a disputed area based on some comments on openstreetmap.org; however, the hole exists in the timezones.shapefile.zip file but not the timezones-with-oceans.shapefile.zip file.

area at 89.0714, 27.5442 for timezones-with-oceans.shapefile.zip

versus area at 89.0714, 27.5442 for timezones.shapefile.zip

Question for timezone data format

Hey ,

Thank you for the amazing project, and we will have a maintained timezone service.
Just have a small question:

Is that possible to have timezone Abbreviation Name and code, like EST, Eastern Standard Time.

Thanks

Can not connect the open street server?

I Try to download the Time zone datasheet,but it shows the log;

waiting 4 seconds
{ message: 'Request failed: HTTP 400', statusCode: 400 }
Increasing overpass request gap
waiting 8 seconds
{ message: 'Request failed: HTTP 400', statusCode: 400 }
Increasing overpass request gap
waiting 16 seconds
{ message: 'Request failed: HTTP 400', statusCode: 400 }
Increasing overpass request gap
waiting 32 seconds
{ message: 'Request failed: HTTP 400', statusCode: 400 }
Increasing overpass request gap
waiting 64 seconds
{ message: 'Request failed: HTTP 400', statusCode: 400 }
Increasing overpass request gap
waiting 128 seconds
{ message: 'Request failed: HTTP 400', statusCode: 400 }
Increasing overpass request gap
waiting 256 seconds

Validation error

I can't generate shape file because of validation errors.

load zones into memory
do validation
Validation error: America/Argentina/Rio_Gallegos intersects America/Punta_Arenas area: 0.08795638367089173
Validation error: Asia/Chita intersects Asia/Shanghai area: 0.0007959703837724789
Validation error: Asia/Manila intersects Asia/Shanghai area: 0.21316446632400018
Validation error: Asia/Ust-Nera intersects Asia/Yakutsk area: 2.9578565029596997
Validation error: Europe/Ljubljana intersects Europe/Zagreb area: 0.005178844060499668
done
error! Zone validation unsuccessful

Asia/Hebron - Asia/Jerusalem

See https://www.haaretz.com/israel-news/.premium-israel-moves-clock-but-palestinians-dont-1.5453010 it seems like their usage overlap in more places than just Jerusalem. I think there were also some mail in tz database mailing list that talked about it.

Create a troubleshooting wiki page.

Topic include:

What to do with invalid geometry errors.
What to do with validation issues.

Bad negative area for Africa/Lubumbashi

Firstly, this is great! I've been trying to figure out how to get territorial waters into the efele data set for a while, now I don't have to!

I downloaded the 2017a release, and I have some issues with the geoJson version of the data.

It looks like Africa/Lubumbashi has one negative polygon with only 4 points (3 if you don't count the dupe at the end), it also looks like it's area is 0. Also, the points go beyond 6 significant digits. Here is the json w/ a most of the points of the positive area removed for readability :

{
"type" : "Feature",
"properties" : {
"tzid" : "Africa/Lubumbashi"
},
"geometry" : {
"type" : "Polygon",
"coordinates" : [ [ [ 23.8940358, 4.8313928 ], .... a ton of points removed .... [ 23.8940358, 4.8313928 ] ], [ [ 24.4123887, -1.7179482 ], [ 24.440029068012333, -1.735314196891881 ], [ 24.440029068012333, -1.7353141968918806 ], [ 24.4123887, -1.7179482 ] ] ]
}
}

Timezone subset ?

Hi,

I only need a timezone extract subset (just Europe)
I modify timezone.json and remove all timezones I don't need

is it the good solution ?

Ocean time zones are incorrect

The ocean time zones, i.e. the ones named like ETC/Gmt+X or ETC/Gmt-X, seem to be inverted. That is, to the east of Greenwich the ETC/Gmt-X is used, whereas it must be ETC/Gmt+X. For more detailed and visual illustration of what I mean, see this issue: RomanIakovlev/timeshape#4 (comment). This is consistent in both shape files and geojson releases.

validation error ?

Thanks for your projet

I try to execute your script like recommanded in the doc
node --max-old-space-size=8192 index.js

but I got this error at validation step

validating zones
load zones into memory
do validation
Validation error: America/Argentina/Rio_Gallegos intersects America/Punta_Arenas area: 0.2113007296132473
Validation error: America/Argentina/Rio_Gallegos intersects America/Santiago area: 0.4102222149999935
Encountered TopologyException, retry with GeometryPrecisionReducer
Validation error: America/Punta_Arenas intersects America/Santiago area: 0.21130072961324728

I'm doing something wrong ?

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