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Repeating dates

November 2, 2012

Dates repeat themselves every so often, so…

What is the largest possible gap (in the last 200 years anyway) between repeating dates?

a. Same Day + Date + Month

For example, I am writing this on Friday 2 November 2012. The previous Friday 2 November was 5 years ago in 2007, but the next Friday 2 November is in 2018, another 6 years away. Such gaps of 5 and 6 years are very much the norm.

On rare occasions, it can be much more than that.

So, what is the largest possible gap between dates with the same day of week, day of month and month, similar to those above?

b. Same Day + Date

For example, the previous instance of a Friday on the second day of the month was in Friday 2 March 2012, a gap of 8 months between then and now.

Again, it can sometimes be rather more than that.

So, what is the largest possible gap between dates with the same day of week and day of month, similar to those above?

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