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Help checking accuracy of TIME pages in Whitaker's Almanack

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Sheridan's picture
Last seen: 2 days 13 hours ago
Joined: 26/02/2014 - 18:57
Help checking accuracy of TIME pages in Whitaker's Almanack

I produce the astronomy pages for Whitaker's Almanack.

I would like someone who is familiar with the following topics to check the accuracy of various descriptions:

Greenwich Mean Time, Universal Time, Apparent solar time, Sidereal time, Ephemeris time, Atomic time, Radio time signals.

I have attached a Word file so you can see what I am talking about. Contact me off list at

File Time without examples.docx21.44 KB
Richard Miles's picture
Last seen: 10 hours 56 min ago
Joined: 07/03/2014 - 16:09

Sheridan - A quick look tells me that from an historical perspective there is only mention of two time-related events happening since 2000 namely European Summer Time Act in 2002, and MSF Rugby to Anthorn switch in 2007. I think more can be written about a few significant changes since then. But that needs some researching to identify what that might be.

Tim Haymes's picture
Last seen: 4 hours 34 min ago
Joined: 13/06/2014 - 21:53

Im not an expert - and sorry ive just seen your request.  In the section on Universal Time, GMT starting at Noon was also referred to as GMAT, Greenwich Mean Astronomical Time  - a very minor point.