Re: Julian dates WTF
No, it's worse than that. https://en.wikipedia.org/wiki/Julian_day
"The Julian day number is based on the Julian Period proposed by Joseph Scaliger, a classical scholar, in 1583, at the time of the Gregorian calendar reform, as it is the least common multiple of three calendar cycles used with the Julian calendar:
" 15 (indiction cycle) × 19 (Metonic cycle) × 28 (Solar cycle) = 7980 years"
So it can mean either the number of days since the epoch (to astronomers and historians) or the number of the day in the year (to people who make ready meals).