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3
votes
1answer
118 views

sense of time in people with no means for time measurement

How did early, e.g. ancient to early medieval times, people have a sense of time, i.e. an hour, with no clocks around? I am aware that mechanisms for time measurement existed, sundials, water clocks, ...
2
votes
3answers
116 views

Time zones in USA

Time zones are demarcations of solar hours (15 degrees) on the planet (a few are offset by 30 or 45 minutes) used by many nations. Solar noon moves closer on average (depending on the month and day) ...
9
votes
2answers
751 views

Why did the clocks go back in Shanghai on December 31, 1927?

If you are a Stack Overflow user you may already have read Jon Skeet's excellent answer that discusses a time zone change at the end of 1927 in Shangai, when the clocks went back for 5 minutes and 52 ...
14
votes
1answer
346 views

in what form did William the Conqueror write the date of his own coronation?

This is a question about the English legal calendar as viewed by people living at the time, not as historians recorded it later. New year shifts to 1-January To the best of my understanding, the ...
4
votes
2answers
84 views

Who were the first to relatively measure the length of the year precisely?

In the past people used to measure the length of a year according to the moon 28-days cycle but this obviously left a few days out, so I was wondering which civilization first realized this and fixed ...
16
votes
5answers
245 views

What was the Julian Calendar aligned to?

I understand that the Julian Calendar was introduced to align the length of the calendar to the tropical year, i.e. make the average year 365.25 days long. However, what I'm still trying to figure out ...
13
votes
2answers
237 views

What is the earliest reliably dated event exact to the year?

How far does reliable counting of the years reach into the past: with the help of dating methods? using only primary sources?
10
votes
1answer
420 views

What is the origin of Indian weekday names?

The days of the week in several Indian languages are named after the same planets/gods as the Graeco-Roman days of the week. Did these arise from some common source predating both (PIE?), or was the ...
14
votes
2answers
2k views

Why is Spain's base timezone UTC+1?

Looking at the time zone map on Wikipedia we can see that countries such as France and Spain technically should have a time zone of UTC+0. Wikipedia says: France previously used GMT, but was ...
18
votes
1answer
348 views

Farming societies without calendars

Were there ever any farming societies without a calendar? For example, the Egyptians had a calendar to help them know when to plant and when to harvest. The ancient Greeks had a calendar, as did the ...
14
votes
1answer
300 views

What was the motivation for the Gregorian Calendar?

The Gregorian Calendar eventually replaced the Roman calendar at some point, I know this was something to do with the days not being quite accurate so specific days (I think equinox and solstice) were ...