[logfromblammo]

I believe this "new calendar" idea has already been tried several times. Religion and agriculture always seem to be the sticking points.

Months are hardly necessary, anyway. Wouldn't quarters be better?

Have 4 quarters of 13 * 7-day weeks each. Designate the vernal equinox as day 0 of the calendar, follow it with the 4 91-day quarters, and tack on leap days after the 4th quarter according to the Gregorian calendar rules.

So you end up with dates like the 41st of Spring, or the 82nd of Summer. New Year's Day would be the 0th (nilth) of Spring, and Leap Day the 92nd of Winter.

[restalis]

"Months are hardly necessary, anyway. Wouldn't quarters be better?"

Months are, more or less, related to the moon periods, just like the year is to earth period. And most of the world has year quarters, called seasons. Seasons are there (in front of our eyes) to stay, regardless of how we'll choose to distribute the days of the year.