[Lazare]

Yes, the offset is a round decimal number, but I'm not sure why that makes it a very good epoch. The code actually has it as "16 * 10 * 8", but it seems like an obvious optimization would be to hard code it as, yes, 1600000000. But if you're hard coding that, you could hard code 1609459200 (for a round date) or 1620073869 (for when the initial commit was made) or whatever instead.

Any choice will inevitably be arbitrary, but this feels like it may have been chosen for odd reasons to me.