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Extra 8% OFF Everything Over $99 for our NEW YEAR Sale | code: HAPPYNY23 | Expires 01/07 Midnight CST
Extra 8% OFF Everything Over $99 for our NEW YEAR Sale | code: HAPPYNY23 | Expires 01/07 Midnight CST

Nautical almanac data for the sun and selected stars valid until 2050, plus easy to use, concise sight reduction (same tables used in the US-UK Annual Nautical Almanac) and altitude correction tables. Plus work forms to make the process even easier. A concise one-book solution for celestial navigation. It takes a few extra steps to get GHA and dec with the Long Term Almanac, since it does it without the usual 10 pounds of reference books, but with practice it takes just a few minutes longer than normal almanac look up.

All the information you need for

  • Finding your position from timed sextant sights
  • Checking your compass by celestial bearings
  • Computing great circle routes to your destination

Shipping is fast and FREE across the USA for all orders $199 or more. For more details about shipping see the full shipping page here.

We offer 30 Day Easy Returns. If you decide you don't need a product we'll take it back so long as it is in original and re-saleable condition. See the full details here.

Found a better price online? We'll match it or beat it if we can. 

All you need to do is let us know via phone or email (sales@weatherscientific.com) and we'll let you know what we can do.

You will need to provide evidence of the better price online and it must include any shipping or taxes charged by that site. i.e. It needs to be the total price.

This only applies to new products, it does not apply to used condition products.