[tz] U.S. abbreviations in 1942

Garrett Wollman wollman at csail.mit.edu
Tue Nov 15 07:02:24 UTC 2011

The U.S. went on permanent DST for the duration of World War II
starting on February 9, 1942.  The following quotation from
/Broadcasting/ magazine of 1942-02-02 sheds some more light on
abbreviations used in the U.S. during the early 1940s:

: At present, times for network programs are nationally released in
: accordance with their broadcasts on the East Coast and are labelled
: EST.  In previous years, during the months that daylight saving time
: was in effect in certain parts of the country, including New York,
: the designation was changed to EDST for that period.

: [... T]he MBS publicity department stated that it will follow the
: custom of other years and label program times as EDST.  NBC said
: that [...] Red Netowrk programs would be shown as EST after Feb. 9.

: [...] CBS has announced that "concurrent with national daylight
: saving beginning Feb. 9, Columbia network's time designation on news
: releaess is Eastern Time.  This phrase was chosen because the time
: is no longer standard and because, with national daylight saving,
: EDST seems unessential."


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