Fun Fact: Friday the 13th is more common than many other days

DoOwlsExist
2018-07-13T21:45:28Z

The calendarepoch for the gregorian calendar (that the western world has been used since the 16th century) is 400 years. After that, the whole calendar repeats itself. It is exactly 146097 days in these 400 years. (Including all 4/100/400-rules.)

Out of these, there are 28 that are slightly more common than all others. One of those, is Friday the 13th, occuring 688 out of the 146097 days.

The least common day is a Wednesday the 31st, which happens 398 out of 146097 days.

Source, and more info

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