AHC: Have New Year's Start At Spring Equinox

The traditional celebration of New Years on January 1st partially comes from the Roman Feast to the God Janus that fell around this time. Otherwise, New Years would often be celebrated around the time of the Spring Equinox at March. Some of this still lingered;Roman consuls would take office in March, and until FDR, American presidents would take office in march as well.

Your challenge is to make it so in the modern day, New Year's Day is recognized as the Spring Equinox.
 
The traditional celebration of New Years on January 1st partially comes from the Roman Feast to the God Janus that fell around this time. Otherwise, New Years would often be celebrated around the time of the Spring Equinox at March. Some of this still lingered;Roman consuls would take office in March, and until FDR, American presidents would take office in march as well.

Your challenge is to make it so in the modern day, New Year's Day is recognized as the Spring Equinox.

March 25 was treated as New Year's Day in England up until the 18th century. Towards the end of this period, when there were lots of people who celebrated New Year's in January, you'd get people writing dates like "January 2nd 1714/1715".

Anyways, whilst Consuls originally took up office in March, I think they later switched to January 1st, for whatever reason (to get the patronage of Janus?), and this is the origin of the year starting in January (as Roman years were named after the Consuls in office, so a new pair of Consuls = a new year). Butterfly away the switch and we might well still be starting our years in March.
 
IIRC, the date-shift prompted the 'April Fool' epithet.

FWIW, the so-called 'Severn Tsunami' fell in the middle of the switch-over, causing MUCH confusion in retrospectively collating reports & observations.

{ The 'Severn' thing seems to have been a 'common or garden' storm surge at the very peak of a big 'Spring Tide', aggravated by a rapidly developing 'cold sector'. No 'quakes reported. But, there's possible evidence of a slump at the edge of continental shelf. Not 'Storegga' grade, but non-trivial. This zone, however, is in Eire waters, and they seem reluctant to do the necessary hi-res hydrographic surveys and sampling. Doesn't help that the UK's official position is 'WEATHER, just WEATHER', so no funds for a joint expedition will be forthcoming. Brexit won't help... }
 
Top