$ npm install -g is-holiday

$ is-holiday --help

  Usage:
    $ is-holiday          Check if today is a holiday

  Example:
    $ is-holiday
    $ is-holiday --month
    $ is-holiday --year

  Options:
    -m, --month           Get every holiday for the current month
    -y, --year            Get every holiday for the current year

    -h, --help            Show help options
    -v, --version         Show version