1564
Sea Level
(imgs.xkcd.com)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules
This is a science community. We use the Dawkins definition of meme.
Those are called intercalary months. They had them in the ancient egyptian calendar (5 every year, 6 in leap years) and were usually used for rest and religious ceremonies.
https://en.wikipedia.org/wiki/Intercalary_month_(Egypt)
I'm pretty sure they're being cheeky and we're referencing exactly this ;)