Hello, Here's my summary of where we are with this issue. Please say if you think that I've misrepresented/misunderstood anything.
* The initial proposal was to redefine `gregorian` to have a distinct meaning from `standard`, namely, `gregorian` would include the restriction that prohibits date/times no earlier than 1582 October 15 00:00:00 (https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issue-849497317__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdqrLLsnw$ ). * Such a split was deemed undesirable as it would mean that something which is presently legal would become illegal, and thus the change would potentially break existing software (https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issuecomment-812838600__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdRBtkpVU$ , https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issuecomment-812862492__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdyST388w$ ). * If there is a need for a Gregorian calendar which can only be used from 1582, we could introduce a new one for that purpose e.g. `strict_gregorian.`, if there is a use case for it (https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issuecomment-812838600__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdRBtkpVU$ ). However, the existing `proleptic_gregorian` could be used for the same purpose (https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issuecomment-813937985__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdwSkMICY$ ). * The definitions of other calendars refer that to the "Gregorian" calendar, i.e. `noleap` and `all_leap`, should be reviewed - presumable to refer to the "Proleptic Gregorian" calendar (my comment)? * There is no use case for deprecating the `julian` calendar use for dates after 1582, because there are probably some models with simplified calendars defined in which leap years invariably occur every 4 years (https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issuecomment-812871576__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdAY-HSFs$ ). It seems like there is support for deprecating `gregorian`. When the Gregorian calendar is intended for dates after 1582, we could introduce a new calendar (e.g. `strict_gregorian`), or else use the existing `proleptic_calendar`, which is the same as Gregorian for dates after 1582. The `noleap` and `all_leap` calendars could be updated in a backwards-compatible fashion to refer to the proleptic Gregorian calendar (see comment on the `julian` calendar). David -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://urldefense.us/v3/__https://github.com/cf-convention/cf-conventions/issues/319*issuecomment-860641932__;Iw!!G2kpM7uM-TzIFchu!lnk2LRqS4xALuyIsHijmF35cygt9HoYTrPF2y34HyE1gbjMD4L5q51mEhZRBhLu-kXAdt3p1toQ$ This list forwards relevant notifications from Github. It is distinct from [email protected], although if you do nothing, a subscription to the UCAR list will result in a subscription to this list. To unsubscribe from this list only, send a message to [email protected].
