Yes, the delegates to the Washington Conference were aware that astronomers might continue to use 360 degrees. References to this point appear in the protocol of the proceedings.
From: cfuhb-acdgw@earthlink.net
To: jacksonmcdonald@hotmail.com
Date: Tue, 18 Mar 2014 16:56:25 -0700
Subject: [NavList] Re: Prime Meridian
Jackson McDonald wrote:
> Next there were tedious, scientific (and not-so-scientific) deliberations about whether meridians of longitude should be measured 360 degrees from west to east, 360 degrees from east to west, or 180 degrees both east and west of the Prime Meridian.
There's still no universal convention. Astronomy sometimes measures
terrestrial longitude east to 360. For example, the JPL HORIZONS system
will accept longitude -150 (= 150 west) or the equivalent +210 for the
observing site, but in either case its output says +210.
I have had to adjust longitudes with a calculator because they were
"illegal" according to the program I was trying to use. Writers of
astronomical software, don't get too zealous with your error checking.
--
: http://fer3.com/arc/m2.aspx?i=127261
