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The home of HM Nautical Almanac Office on GOV.UK. HM Nautical Almanac Office is a small multi-disciplinary group of specialists whose purpose is to provide solutions to astronomical and celestial navigation problems.
HM Nautical Almanac Office provides the daily rise, set and twilight times in February for the British Isles
HM Nautical Almanac Office provides the daily rise, set and twilight times in January for the British Isles
The visibility of the new crescent moon for March 2023 (lunation number 1240)
HM Nautical Almanac Office is a small multi-disciplinary group of specialists whose purpose is to provide solutions to astronomical and celestial navigation problems.
HMNAO provides information of the sighting of the new crescent moon for the start of Ramadan and the start of Eid al-Fitr
The visibility of the new crescent moon for April 2023 (lunation number 1241)
NavPac 4 is the much anticipated software upgrade to HMNAO’s celestial navigation software package
Part of the total phase of the lunar eclipse will be visible from the United Kingdom as the Moon rises
HM Nautical Almanac Office provides the daily rise, set and twilight times in December for the British Isles
A deep partial eclipse will be visible from the British Isles on the morning of 20 March 2015
HM Nautical Almanac Office provides the daily rise, set and twilight times in October for the British Isles
A new paper by F.R. Stephenson, L.V. Morrison and C.Y. Hohenkerk, presents new determinations of Earth Rotation from 720 BC to AD 2015
HM Nautical Almanac Office provides the daily rise, set and twilight times in March for the British Isles
HM Nautical Almanac Office provides the daily rise, set and twilight times in August for the British Isles
HM Nautical Almanac Office provides the daily rise, set and twilight times in September for the British Isles
HM Nautical Almanac Office provides the daily rise, set and twilight times in November for the British Isles
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