I have a synoptic Met chart issued by the US Weather Service in 1943. The time of the chart - as printed on it - is "2:30 am E.W.T".
Now 0230 (in any time zone) is a very strange time to label a chart (be it Met, or otherwise!)!
I have assumed (v dangerous!!!) that "E.W.T." is Eastern Winter Time? Is this correct? And - further - what were the US Times Zones in WW2 (clearly not the same as the present day?)?
Peter Davies