I tried to replicate the bug only to find out the months are 0-indexed (jan = 0) so the example should use `setMonth(1)`. I must say I'd prefer getting an exce

I tried to replicate the bug only to find out the months are 0-indexed (jan = 0) so the example should use `setMonth(1)`. I must say I'd prefer getting an exception rather than a silent roll-over any day of the week – pun intended.