Remember the whole Rapture thing?
I just realized, wotsisface obviously worked in the Gregorian calendar,
and clearly that is all wrong!
See, back then they used the Julian calendar and the two calendars drift relative to each other, causing an offset between dates.
So, right now, to convert, just add 13 days, and voila, you’re done!
Lets see, 21st May, plus 13, carry the 3, and…