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Gregorian calendar solar cycle

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955681.  Tue Dec 11, 2012 7:38 pm Reply with quote

When was the last solar cycle in the gregorian calendar?

Or when is the next one?

Every 400 years is it?

1272252.  Sun Jan 28, 2018 5:48 am Reply with quote

Not entirely sure what you intend but

2008-2019 (presumably)

1272343.  Sun Jan 28, 2018 4:49 pm Reply with quote

I think he means a different cycle
this fits the 400 years part.

1272379.  Mon Jan 29, 2018 5:33 am Reply with quote

That's right. If a given date falls on a given weekday in any year in the Gregorian calendar, it is guaranteed to fall on the same weekday 400 years later. 400 years is the shortest perpetual cycle with this property.

The question in the original post doesn't really have an answer, though. The cycle is perpetual, so you can start it whenever you like.


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