3 ms·

That actually works pretty well and has worked well for thousands of years for what it was designed to do. The calendar should not necessarily follow the local

That actually works pretty well and has worked well for thousands of years for what it was designed to do. The calendar should not necessarily follow the local climate of every region, as that can vary each year and throughout the time. They had to fix a reference point for seasons, and they have chosen the Equinox. This is a sensible reference point (see refs). But also it could be anything else as long as it's measurable and verifiable independently and does not change based on location. The same works for the clocks. People in Sweden still use the same 24-hour clock, even though they have vastly different daylight conditions in different seasons. The Persian calendar is actually our most precise [1] calendars to date, and it owes its precision to tying the calendar to astronomical seasons [2]. [1] https://www.timeanddate.com/date/perfect-calendar.html https://www.timeanddate.com/date/perfect-calendar.html [2] https://www.timeanddate.com/calendar/persian-calendar.html https://www.timeanddate.com/calendar/persian-calendar.html

LudwigNagasena 4y ago
Calendar seasons are mainly used to talk about the weather. Using Equinox as a fixed reference point is not any more precise than using meteorological convention wrt thermal seasons.
- geraneum 4y ago
  Here is what Equinox means and how it's related to weather in general https://www.weather.gov/lmk/seasons https://www.weather.gov/lmk/seasons > Using Equinox as a fixed reference point and a is not any more precise than using meteorological convention wrt thermal seasons Well, no. What meteorological convention? That's a pretty broad term. We are talking about calendars, not a general weather forecast system, as I was comparing Persian calendar with other calendars. With Equinox, you get a good indication of weather conditions for a wide geography while having a precise reference point to design a calendar which can be used for other equally important purposes. P.S. While I was thinking about what you wrote, I wondered how these things were argued and arranged in ancient times and what did they think or say considering what they had to come up with affects a significant portion of the civilized world and trade between nations.

LudwigNagasena 4y ago

Calendar seasons are mainly used to talk about the weather. Using Equinox as a fixed reference point is not any more precise than using meteorological convention wrt thermal seasons.

geraneum 4y ago
Here is what Equinox means and how it's related to weather in general https://www.weather.gov/lmk/seasons https://www.weather.gov/lmk/seasons > Using Equinox as a fixed reference point and a is not any more precise than using meteorological convention wrt thermal seasons Well, no. What meteorological convention? That's a pretty broad term. We are talking about calendars, not a general weather forecast system, as I was comparing Persian calendar with other calendars. With Equinox, you get a good indication of weather conditions for a wide geography while having a precise reference point to design a calendar which can be used for other equally important purposes. P.S. While I was thinking about what you wrote, I wondered how these things were argued and arranged in ancient times and what did they think or say considering what they had to come up with affects a significant portion of the civilized world and trade between nations.