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1400 (MCD) was a leap year starting on Thursday of the Julian calendar, the 1400th year of the Common Era (CE) and Anno Domini (AD) designations, the 400th year of the 2nd millennium, the 100th and last year of the 14th century, and the 1st year of the 1400s decade. As of the start of 1400, the Gregorian calendar was 8 days ahead of the Julian calendar, which was the dominant calendar of the time.
However, unlike most common years, the year 1400 was not a regular common year starting on Wednesday but a century common year starting on Wednesday. The century common year was the same year as the leap year, which began on Thursday and ended on Friday. No such year other than 1400 was a century leap year starting on Thursday, and finishing on Friday. Only the year 1400 was that type. You know that the leap day is Sunday in most leap years that begin on Thursday and end on Friday, as you have to remember. 172.97.188.101 (talk) 16:51, 17 September 2024 (UTC)[reply]
