NavList:

Andres, you wrote:
"and I add: 2015: DE430/LE430 JPL planetary ephemerides adopted as basis, including the latest IAU resolutions."

I don't think this is important "news," and I would even argue that this is a trivia. Has even one figure, one digit in the tenths column, been changed by this latest version increment? The Nautical Almanac has employed the JPL ephemerides for many years. From the first adoption of those ephemerides, the accuracy of this resource greatly exceeded the accuracy requirements of the Nautical Almanac (not so, by the way, for the Astronomical Almanac).

Also, the online history of the almanac from USNO which you posted is clearly a "lightweight" history --a few highlights. There's obviously much more to it.

Frank Reed

PS: Actually there probably is at least "one digit" in those tens of thousands of celestial positions published annually that has changed since the adoption of the new ephemerides. For example, if the Declination of the Moon was, let's say, 12° 15.05001' in the previous edition, then it would round to 12° 15.1' at the nearest tenth of a minute of arc. It is conceivable that there has been a change at a level somewhere out in the minor digits --for example, that case might change to 12° 15.04999' in the latest edition-- which would lead to a change in the rounding of the last digit in the published data. That might hit one single case in the latest almanac. Otherwise, not likely!