Finnish calendars definitely have leap day ( karkausp=E4iv=E4 ) = marked on Feb 24th. But the origin of this (counterintuitive) practice is unknown to me. That comes from Roman, pre-Julian days. Back then February was the last month of the year so it was natural that it changed in length. The last week of it was considered some kind of extra time that was used for all kind of corrections. Now I do not know if Romans had 7 or 8 days in a week (I have heard both stated) but 24th would have been the beginning of the last week with 7 days week and 30 days in February (before Caesar and Augustus each stole one day) Osmo