On Sun, 26 Aug 2018 11:52:05 -0400, Michael Black wrote:

+AD4 I don't think that's going to work.
+AD4
+AD4 I found a small book at a used book sale a few years ago, maybe titled
+AD4 +ACI-Chronograph+ACI. It was about the need time in order to navigate. One of
+AD4 them, longitude or latitude, required accurate time, and ships didn't
+AD4 have that. Hence an effort to create a very accurate clock, which was
+AD4 also portable.
+AD4
+AD4 WWV meant you didn't need that accurate clock, just a shortwave radio to
+AD4 let you know when to check the stars or sun.
+AD4
+AD4 Michael

According to my first WRTH, the US Naval station, NSS, was supposed to be
broadcasting time signals. My morse skills were, and are, nonexistent
but I was able to ID NSS. Didn't hear anything which sounded like any
signals which coordinated with WWV. Might have been obsolete info by
then.

WWV used to be coordinated with the US Naval Observatory in Annapolis.
Atomic clocks got better than observatories and that was that for that.