Really TRUE odd factoids

[DaveReading]

You can reuse a 2015 calendar in 2026. The days will match.

This pattern repeats roughly every 11 years for non-leap year cycles.

How can you go 11 years without a leap year ?

 

[Chris S]

How can you go 11 years without a leap year ?

That was poorly phrased. I've now clarified it;

The 11-year gap is the most frequent interval for a non-leap year to have the exact same sequence of dates and weekdays as a previous non-leap year.