[issue31895] Native hijri calendar support
New submission from Haneef : There should be native support for converting between Hijri (Umm al-Qura), Gregorian, Julian and UnixTime calendars. Many big players have included native support for Hijri calendar in their SDKs and software. Below are some: (Java Hijri calendar support)[https://docs.oracle.com/javase/8/docs/api/java/time/chrono/HijrahChronology.html] (Apple supports the Hijri calendar in 5 of their SDKs (Software Development Kits))[https://developer.apple.com/documentation/foundation/calendar.identifier] (Microsoft Windows supports Hijri calendar naively)[https://www.microsoft.com/middleeast/msdn/ArabicCalendar.aspx] (Microsoft Office has native support)[https://blogs.technet.microsoft.com/office_global_experience/2010/01/13/um-al-qura-calendar-support-in-office-2010/] (Android Hijri calendar support)[https://developer.android.com/reference/android/icu/util/IslamicCalendar.html] (Google Calendar allows Hijri calendar as an alternate calendar)[https://www.maketecheasier.com/display-alternate-calendar-google-calendar/] -- messages: 305199 nosy: haneef95 priority: normal severity: normal status: open title: Native hijri calendar support type: enhancement versions: Python 2.7, Python 3.8 ___ Python tracker <https://bugs.python.org/issue31895> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue31895] Native hijri calendar support
Haneef added the comment: This feature can be added to the (datetime.py)[https://docs.python.org/3/library/datetime.html], Java has done a similar move and it makes the whole process a lot easier. The Hijri calendar is used across the globe by various websites and developers, some have even made libraries. -- ___ Python tracker <https://bugs.python.org/issue31895> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue31895] Native hijri calendar support
Haneef added the comment: Thanks @steven.daprano, yeah, it would be good to have support for other calendars as well. In my case, I use the Hijri Umm al-Qura, Gregorian and obviously UnixTime calendars. You're right, maybe it would be wiser to implement it in the PyPi first and then move it to a standard Python library. @Lemburg, I checked out the PyPi convertdate library, as Gareth mentioned, it doesn't specify which Islamic calendar it is implementing and had a look at the code, it doesn't look like Umm al-Qura. It seems to be a very roughly calculated Tabular Lunar Calendar (with Hijrah as the reference point), no where near accurate to the actual lunar cycles. @Gareth To explain Islamic Hijri Calendar in short, it is basically a sighted Lunar calendar, which has to be sighted at the end of every month to determine the beginning of the next month. Therefore, it is not possible to determine the dates in future (beyond 29th of the month). Every month could be 29 or 30 days. There are 12 months and 354 days in a year. However, to solve this issue, Muslim astronomers and Scholars over the course of History (1400years) have used two different types of Hijri calendars; one sighted and another calculated. The sighted version of the calendar is accurate but cannot go beyond 29th of the current month. The astronomically calculated version could go up-to a fixed period which the astronomers have calculated. The calculated/civil calendar is used for Visas, deeds, bank statements, appointments and other civil matters in their respective countries. One of the predominantly used and astronomically calculated Hijri calendars is the Umm al-Qura Hijri calendar. It was calculated by scholars & astronomers at the Umm al-Qura (Makkah) University. Sorry about the long post, hope this helps. -- ___ Python tracker <https://bugs.python.org/issue31895> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
