A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Iwancio
Date: 2019 Oct 21, 21:51 -0700
Off the top of my head, the only information hosted on the Astronomical Application site that "is not accessable via (other) means" is the Celestial Navigation Data calculator. Several months ago I asked about an offline version (perhaps rolled into MICA) and they simply pointed me towards NavPac.
It'll be a shame to see that data basically disappear behind a paywall for six months (and hopefully it will come back), but I get the feeling the USNO is conscious of not doing anything to disrupt the commercial celnav software market.