time library

good articles on time library and system library

1. Professional System Library: Introduction
2. Time Period Library for .NET
3. PersianCalendarPlus - an easy to use tool for working and converting PersianDateTime to Gregorian and back
4. Convert date from Hijri Calendar to Gregorian Calendar and vise versa
5. Windows Hijri Calendar
6. ASP.NET DatePicker User Control (Hijri / Gregorian) shows month and year as dropdowns
7. Farsi Library - Working with Dates, Calendars, and DatePickers
8. Persian Calendar(PersianDateTime) in C#
9. Persian DateTime
10. Bootstrap Persian DateTimePicker