HMNAO banner

[Skip to Content]

Copyright and Licensing of HMNAO Material

Copyright and Licensing of HMNAO Material


HMNAO material is protected by Crown Copyright. Reproduction of this material will require a license.

Licensing: Printed Publications

If you are interested in licensing material from one of our printed publications listed in the table below, then permission to reproduce should be sought from the Intellectual Property Group at UKHO.

CodeUKHO Publication / Product Title
DP330NavPac and Compact Data
GP100The Astronomical Almanac
GP200Astronomical Phenomena
NP303Rapid Sight Reduction Tables for Navigation (AP3270) – 3 volumes
NP314The Nautical Almanac
NP321The Star Almanac for Land Surveyors
NP323Star Finder and Identifier
NP401Sight Reduction Tables for Marine Navigation – 6 volumes

To obtain a copyright licence please visit the Copyright Licensing part of the UKHO web site. Here you will find information on Crown Copyright and UKHO's Licensing policy. Please follow the appropriate link.

If you have any licensing queries or if you need any assistance whilst using the online licensing process, please contact the Intellectual Property department using one of the methods given below:

  • By e-mail:
  • By post:

Licensing: Astronomical & Calendarial Sheets, World Time Zone maps and Websurf data

If you wish to make use of our Astronomical & Calendarial sheets, our World Time Zone Map or data from the Websurf section of our website (which includes data such as Sunrise/set times, Moonrise/set times, Hours of Darkness and twilight times) you may do so under the terms of a licence. A charge for the supply of our material is applicable if it is for commercial use.

The process for obtaining such data is as follows:

  1. Send an e-mail request to with the type of data you wish to use, a location and year where applicable.
  2. We will send a message back confirming your request, including a quote for any relevant charges. We will also include a copy of the licence, payment details e.g. methods of payment and a form for those wishing to pay for their data with a credit card and the contact details of the UKHO Finance Department.
  3. Once payment has been confirmed by the Finance Department, the data will be sent out to you by e-mail or post including license details relevant to your request.
© Crown Copyright 2008-2021 / Privacy Policy
Last modified: Thursday, 12 January 2017 at 14:16:34 GMT