Category Archives : Time & timekeeping

Home  >>  Time & timekeeping

The Prime Meridian is unmoved

This article was written by Rob Edwards, Head of Science Learning at the Royal Observatory Greenwich. In August 2015 a paper was published by scientists in the US explaining why the Prime Meridian at the Royal Observatory Greenwich is 102 metres to the west of the prime meridian used by…

Just a second …

Do you ever find yourself wishing that there were more hours in the day? If so, you may be comforted to know that Tuesday, June 30, 2015 will actually be a little longer than normal this year; not by hours, but a single second – a leap second. This peculiar…

Dates of Ramadan 2015

Here are the times for the first sighting and setting of the crescent moon at the beginning and end of Ramadan 2015 (1436 AH), according to data supplied by the HM Nautical Almanac Office. The times given here are for London, Manchester, Leeds and Glasgow. Ramadan Mubarak! Date (2015) Times of first…

Women’s History Month – Ruth Belville

We’ve been celebrating Women’s History Month by looking at the women who played such a vital role in the history of science and the development of our Observatory. Previously we’ve discussed Louise de Keroualle and the creation of the Observatory and Caroline Herschel – the first ever paid female astronomer. Today…