Holiday Calender

URL format Link to heading

• Apple Holiday Calender:

  Base URL: calendars.icloud.com/holidays/

  File Name Pattern: <ISO 3166-1 alpha-2>_<ISO 639-1>.ics

  Full URL: calendars.icloud.com/holidays/cn_zh.ics

• Google Calender:

  Base URL: calendar.google.com/calendar/ical/

  File Name Pattern: <ISO 639-1>.<ISO 3166-1 country code>#[email protected]/public/basic.ics

  Full URL: calendar.google.com/calendar/ical/zh.china%23holiday%40group.v.calendar.google.com/public/basic.ics

see ISO 639-1
see ISO 3166-1 alpha-2
see ISO 3166-1 country code

Can do Link to heading

but need parsing ICS file (RFC 5545)

e.g:

1. Query holidays within a specific time range
2. Check today is not it holiday