On Thu 12 Sep 2019 at 13:48:07 (-0000), Curt wrote: > On 2019-09-12, Greg Wooledge <wool...@eeg.ccf.org> wrote: > > On Wed, Sep 11, 2019 at 07:31:13PM -0500, David Wright wrote: > >> Even more astonishing is the fact that the US Government switched > >> their am/pm meanings sometime between 2000 and 2008, which shows > >> just how ambiguous they are. > > > > [citation needed] > > https://en.wikipedia.org/wiki/12-hour_clock#cite_note-26 > > The style manual of the United States Government Printing Office used 12 a.m. > for noon and 12 p.m. for midnight until its 2008 edition, when it reversed > these designations,[14][15] later maintained in its 2016 revision.[23]
https://www.govinfo.gov/collection/gpo-style-manual?path=/GPO/U.S.%20Government%20Publishing%20Office%20Style%20Manual During the 20th century, they used 12 m. for noon apparently (meridies). I notice that the section heading confuses meridiem with meridian: "9.54. References to meridian in statements of time are abbre- viated as follows:" Cheers, David.