Quantum's interactive calendars, e.g. French Republican Calendar using historic equinox method for leap years.
Pasoonate is a library that includes date time methods and calendars.
Myanmar calendar package for flutter application.
R package to convert lunar to gregorian date
Chronos is a small software in vbnet which makes it possible to make calculations on the dates and conversions between the republican calendar and the Gregorian calendar.
Various online calculation tools for calendars and dates
Rest API which is also a swiss knife and to which you can add all the features you want, and like many others, it's a REST API just for experimenting and laughing 🇨🇭🔪...
轻量日历库
A Javascript converter for Jalali (Persian, Shamsi, Khorshidi) calendar and Gregorian calendar
Custom calendar project
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