The Zoroastrian calendar even today is of significance to quite a few in the community. Though Parsi establishments which published the calendar have lessened, the demand still remains. But all may not be aware of the controversies the community calendars once generated. Some 200 odd years ago, Parsis rioted, murdered, assaulted, and even faced the gallows, over the calendars.
Intercalation is the insertion of an "extra leap day” every four years. This is the reason why there is a difference of one day for every four years between our English and Parsi birthdays. Parsi refugees in India added a "leap day”......