The time-keeping tag has no wiki summary.
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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) ...
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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 ...
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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 ...
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2answers
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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 ...
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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 ...
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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?
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0answers
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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 ...
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2answers
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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 ...
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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 ...
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1answer
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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 ...
