In reply to:

It all has to do with calendars. On 99% (if not more) of our calendars the first day of the week is printed up as Sunday. You really cannot use the weekend argument though since things can have two ends – a front-end and a back-end. You never, for example, say a piece of string has a beginning and an end, just two ends.

bel,

You probably wrote that tongue-in-cheek, but I'll bite anyway.

You can't extrapolate the concept of ends from objects to time. Surely you wouldn't say that January was at the end of the year (or one of the two ends), or that the first is an/the end of the month, or dawn is an/the end of the day!

Oh, and I haven't used a calendar for years. Is there still a market for them?