eli5: Why did we design the months in such a way that winter is in January, February and December in a given calendar year?

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Idk if this is a stupid question or not lol. Obviously when moving from one year to the next, January is right in front of December, e.g. December 2023 is right behind January 2024, but is there a reason that months were designed so that winter carries on into the next calendar year?

We have 12 months and 4 seasons, so each season perfectly divides into 3 months a season. With that in mind, why didn’t we design the months so that winter is in 3 consecutive months within the same calendar year?

I’m not sure if I’ve articulated what I mean properly, so let me know if further clarification is needed.

In: Planetary Science

12 Answers

Anonymous 0 Comments

Overall the season cycle starts again after one year, as the earth has then moved a full circle around sun. The calendar was basically built that way, that a calendar year fits to the seasons cycle, so that you get a rough estimation of the typical season for each month.

However it also depens on your geographic position. On the equator you have almost no classical seasons, and on the southern hemisphere the seasons are inverted. So in Australia they have summer in January.

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