I was about to ask about Daylight time all year during WWII,then decided dear tsuwm has enough to do so ILIU ! Only took 45 minutes of swimming through the murky waters of U.S. government sites to find
http://webexhibits.org/dalightsavings/e.html where you will find more information than you can possibly use about Daylight Saving Time.
The Department of Transportation governs US time
I discovered answer to my question :
"During World War II, the United States observed year-round Daylight Saving Time (from February 2nd, 1942 to September 30th, 1945). From 1945 to 1966, there was no federal law about Daylight Saving Time ... "
Lots of other info including Benj. Franklin story. Further, the Brits are "busted!" for starting the whole time change business.
Oh, during the 1950s a lot of hospitals kept to Standard Time, so if you were born between October and April, your birth date might be off by an hour ... or not!
Uniform Time Act was 1966! Before that it was all up for grabs.
Interesting website.
Here's a Dont-Look-It-Up-Take -A-Guess quizz: how many time zones are there in USA including "Possessions?"
There's a hint in the question.
wow