[frogpelt]

In addition to the 13 month calendar, I wish the year started in March or April. The beginning of Spring* makes more sense for a new year than the middle of winter.

*I realize this is only true in the northern hemisphere, but 90% of the world's population lives in the Northern Hemisphere. The other 10% can start their year in the Fall.

[gohrt]

This is how the calendar originally worked (DECemeber is 10th month), until politics intervened in ancient Rome.

[tjradcliffe]

The Julian calendar typically started the year on the 25th of March (Lady Day) at noon (prior to clocks it was much easier to reckon mid-day than mid-night... navies kept this practice at least into the 1800's). This was true into the 1600's in parts of Europe and North America.

[logfromblammo]

Given that the northward equinox is relevant to astronomy and geographic reference frames, I have also had occasions to wish that not only would the year start at that instant, but also that it be considered day 0 of the new year, rather than day 1.