Peter Tate wrote:

Universal Time Constant also called GMT or Grenich Mean Time.
It has been also referred to as Zulu from the days of Morse code.

It is referred to as Zulu Time not necessarily because of Morse
(International) Code.

It is simply because the time zone the Greenwich Meridian falls in is
the 'Z' time zone. (All time zones have a letter designator).

Steve
Holland, MI
Drake R7, R8 and R8B

http://www.iserv.net/~n8kdv/dxpage.htm