We use some essential cookies to make this website work.
We鈥檇 like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
HM Nautical Almanac Office provides the daily rise, set and twilight times in October for the British Isles.
皇冠体育app visibility of the new crescent moon for late February and early March 2025.
皇冠体育app visibility of the new crescent moon for March 2024 (lunation number 1252)
HM Nautical Almanac Office provides the daily rise, set and twilight times in November for the British Isles.
HM Nautical Almanac Office provides the daily rise, set and twilight times in September for the British Isles.
NavPac 4 is the much anticipated software upgrade to HMNAO鈥檚 celestial navigation software package
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
A deep partial eclipse will be visible from the British Isles on the morning of 20 March 2015
皇冠体育app visibility of the new crescent moon for June 2023 (lunation number 1243)
皇冠体育app visibility of the new crescent moon for April 2023 (lunation number 1241)
Don鈥檛 include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we鈥檇 like to know more about your visit today. .