Nowadays we are using Gregorian Calendar worldwide. But there is some disadvantages of the calendar. Few are listed below.
1. Different month span.
2. Finding weekday of the date is difficult.
3. Date to date calculation is difficult.
4. A calendar is not modeled as clock.
5. Different Quarter length.
6. Not perpetual.
International fixed calendar:
13 months of 28 days. Always starts on Sunday ends on Monday. 365th day and 366th day are the holidays not belongs to any weekday and month.
Disadvantages:
1. Practical implementation of calendar is not preferable because one or two days Not belongs to weekday or month.
We introduce Global Calendar.
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