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Time FAQs
Is noon 12 a.m. or 12 p.m.?
Noon is neither a.m. nor p.m. - the correct designation is 12 noon.
What are (my) latitude and longitude?
Latitude and longitude are imaginary lines encircling the Earth, used to measure positions.
What is a meridian? What is the Prime Meridian?
A meridian is an arbitrary N-S line used by an astronomer as a zero point from where to take...
When and where did the new Millennium officially start, and why?
The new Millennium officially started on 1 January 2001 at the Prime Meridian, Greenwich.
Which years are leap years? When was the first leap year?
To be a leap year, the year number must be divisible by four – except for end-of-century years.
Why are there 12 months in the year, 60 minutes in an hour etc?
Julius Caesar's astronomers explained the need for 12 months in a year...
Why isn’t the earliest sunrise on the longest day and the latest sunrise on the shortest?
The reason has to do with the slight variation in the length of 'natural' days throughout the...
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