https://www.gov.uk/government/organisations/hm-nautical-almanac-office/about?referer=moonsighting.org.uk
HM Nautical Almanac Office is a small multi-disciplinary group of specialists whose purpose is to provide solutions to astronomical and celestial navigation...
nautical almanac officeushmgovuk
https://govbooktalk.gpo.gov/2025/08/19/navigate-with-the-stars-the-new-nautical-almanac-for-2026/?share=print
In an age of GPS and electronic charts, the time-honored skill of celestial navigation remains an essential art for mariners. It requires precision, knowledge,...
with thenautical almanacnavigatestarsnew