Florida's legislature has voted overwhelmingly to change the state's clocks:
The Florida Senate passed the Sunshine Protection Act on Tuesday, three weeks after the state’s House of Representatives, and sent it to Gov. Rick Scott for his signature or veto. (Asked on Wednesday whether Mr. Scott would sign it, and why or why not, his press secretary, Lauren Schenone, said only, “The governor will review the bill.”) The margins of victory in both chambers were overwhelming — 33 to 2 in the Senate and 103 to 11 in the House — and the measure has considerable public support.
The problem? Florida doesn’t have the authority to adopt daylight saving time year-round.
15 USC 260a allows states to adopt year-round standard time, but not year-round daylight saving time. The Department of Transportation is in charge of what states go in what time zones.
In any event, what the bill's sponsors really want, but didn't know how to ask for, is to move Florida from the Eastern time zone (UTC-5 standard and -4 DST) to the Atlantic time zone (UTC-4 standard), and then exempt the state from DST. The intent is simply to put Florida on UTC-4 year-round.
What would that look like, though? From mid-March to early-November, it would look exactly the same, since they're on UTC-4 when on Eastern Daylight Time. Sunrises in would occur between 7:30am mid-March and 6:30am mid-June, sunsets between 7:30pm mid-March and 8:15pm mid-June.
In the winter, mornings would be pretty dark, but there'd be a lot of evening light. The sun would rise just after 8am on December 21st, but set around 6:30pm. In Jacksonville, way up north, the sun would rise about 20 minutes later. But farther west, in Pensacola, the sun wouldn't come up until 8:45am on December 21st, potentially obviating any benefit of the sun setting close to 7pm.
Note that Pensacola, at 87°11' W, is almost due south of Chicago. Miami (80°17' W) is nearly due south of Pittsburgh. But Florida's latitude reduces the differences between summer and winter daylight hours, compared with what we experience farther north.
Should Florida move to UTC-4? It might not be a bad move, if having daylight extend later in the evening makes up for the later sunrises. It would not, however, actually change the astronomical reality of how many hours of daylight they get.
We'll see if the Department of Transportation or the U.S. Congress gives them the authority to hop.