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// ********************* Calculate offset for Sunday *********************
   int y = year - 2000;                // Get year from RTC and subtract 2000
   int x = (y + y/4 + 2) % 7;      // remainder will identify which day of month
                                                // is Sunday by subtracting x from the one
                                                // or two week window.  First two weeks for March
                                                // and first week for November

// *********** Test DST: BEGINS on 2nd Sunday of March @ 2:00 AM *********
   if(month == 3 && dayOfMonth == (14 - x) && hour >= 2)
       {                                   
        DST = 1;                           // Daylight Savings Time is TRUE (add one hour)
       }
   if(month == 3 && dayOfMonth > (14 - x) || month > 3)
       {
        DST = 1;
       }
// ************* Test DST: ENDS on 1st Sunday of Nov @ 2:00 AM ************       
   if(month == 11 && dayOfMonth == (7 - x) && hour >= 2)
       {
        DST = 0;                            // daylight savings time is FALSE (Standard time)
       }
   if(month == 11 && dayOfMonth > (7 - x) || month > 11 || month < 3)
       {
        DST = 0;
       }

   if(DST == 1)                        // Test DST and add one hour if = 1 (TRUE)
       {
        hour = hour + 1;
       }