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HM Nautical Almanac Office: Calendarial Data

Calendarial Data Sheets

HM Nautical Almanac Office produces specially-prepared annual calendarial sheets containing general astronomical information including Seasons, Phases of the Moon, Eclipses, the start and end of UK summer time, principal data on civil and religious calendars and bank holidays in the United Kingdom. Please note that all times are quoted in Greenwich Mean Time.

Data are generally available five years in advance, and may be reproduced in diaries, calendars, newspapers, almanacs and other publications subject to licensing by the UK Hydrographic Office. A supply charge of £25.00 (plus VAT where appropriate) is made for each sheet. They can be obtained via the Admiralty Marine Data Portal.

The Astronomical and Calendarial sheet for 2021 is available for downloading free of charge on the understanding that it is for personal use only.

The following Astronomical and Calendarial sheets are / will be available for purchase:

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Last modified: Wednesday, 31 March 2021 at 03:51:57 BST