11 April
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11 April is the 101st day of the year when using the Gregorian calendar, which is the most widely used calendar in the world today. In leap years, which include 29 February, it is the 102nd day. After 11 April, 264 days remain until the end of the year.
This date falls in April, the fourth month of the year, which has 30 days. Seasonally, 11 April occurs during spring in the Northern Hemisphere and autumn in the Southern Hemisphere.
Position in the calendar
The calculation of days in the year is based on January having 31 days, February 28 or 29, March 31, and April 30 days. Adding 31+28+31 gives 90 days, making 11 April the 101st day. In leap years the total is 102.
Use of other calendars
The Julian calendar, still used by some Eastern Orthodox churches for religious purposes, runs 13 days behind the Gregorian calendar in the twentieth and twenty-first centuries. Therefore, 11 April in the Gregorian calendar corresponds to 29 March in the Julian calendar. The Hijri calendar, based on the lunar cycle, and other lunisolar calendars do not correspond to 11 April in any fixed way, changing their date each year.
Commemorations and events
Like other days in the calendar, 11 April contains various historical events, national commemorations observed by different countries, and international observances recognized by various organizations. Such lists vary across calendar sources and expand as new events are added.