Yes. But they also added leap days on an ad hoc basis right until the Caesar reformed the calendar. So some fussiness would probably not deter the much earlier Romans.
(It's still evidence in the direction you suggest, just much weaker than it looks at first.)
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The precise equinox sounds fussy to measure and even then you need to know three weeks before the equinox. While counting days is very easy.
Yes. But they also added leap days on an ad hoc basis right until the Caesar reformed the calendar. So some fussiness would probably not deter the much earlier Romans.
(It's still evidence in the direction you suggest, just much weaker than it looks at first.)