Redrawing the boundaries to match real shadows would probably help.
 Would probably never happen though. I haven't looked carefully, but my understanding is that the legislation is just that there's no federal standard any more. States, apparently, can still have Standard/DST if they want. And that makes sense. There are lots of arguments in favor of doing the time change 2x a year (while there are also arguments against). Cheers, Scott. |
|
|
Weird. Since the daylight is apparently distributed along a NW/SE axis, why are the time zones...
...arranged along strict north-south borders, and not southeast-northwest? -- Christian R. Conrad The Man Who Apparently Still Knows Fucking Everything Mail: Same username as at the top left of this post, at iki.fi |
|
|
Legacy of the railroads.
I don't know the details, but I think they wanted the boundaries in the countryside away from the cities. And wanted to try to minimize the number of time boundaries in a state. There's always going to have to be compromises. Cheers, Scott. |
|
|
That's kind of the point
Before time zones, every city had their own noon. Zones made it possible to keep track without carrying around a book full of tables. Time zones exist to trade accuracy for simplicity. -- Drew |
|
|
when I first went to alaska in the 70's they had 4 time zones since collapsed into one for bidness
"Science is the belief in the ignorance of the experts" – Richard Feynman |
|
|
Yeah guys, I knew both of those. But look at the colour bands' direction.
You'd get more accurate clock/Sun coordination moving the top left state in each TZ into the TZ to the left of where it is (dark blue ones would go medium blue), and the bottom right one to the right (light pink/purple ones go dark pink). Most TZs would go from three or even four different colour bands to two. IFF, that is, the colour bands represent what I think they do, "rough time of day according to the Sun"? -- Christian R. Conrad The Man Who Apparently Still Knows Fucking Everything Mail: Same username as at the top left of this post, at iki.fi |
|
|
I don't know why the legends didn't transfer with the graphics.
https://www.washingtonpost.com/weather/2022/03/17/daylight-saving-time-sunrise-sunset/ The rounded upper-right legend is: "Time of the latest sunrise of the year if daylight saving time is made permanent" Darkest - top = 10AM or later Decreasing in 30 minute increments Lightest - bottom = 7:30 - 8:00 AM "Note: Sunrise times calculated based on the centerpoint of each county." - So that's why the shadow boundaries aren't smooth. HTH! Cheers, Scott. |
|
|
Hmm, ""Time of the latest sunrise..."
Yeah, shouldn't that work as a proxy for "time of day according to the Sun"? -- Christian R. Conrad The Man Who Apparently Still Knows Fucking Everything Mail: Same username as at the top left of this post, at iki.fi |
|
|
Kinda sorta.
|
|
|
Aha -- so it straightens up and tips over?
The borders of my "sunlight time zones" should lean the other way in autumn, so vertical is the sensible all-year compromise? Sounds legit; I retract my objection. -- Christian R. Conrad The Man Who Apparently Still Knows Fucking Everything Mail: Same username as at the top left of this post, at iki.fi |
|
|
Mine will be 9:00 to 9:30
I support this. Do it. |
DST or Standard or both?
- (malraux)
- (11)
- March 20, 2022, 10:38:20 AM EDT
Redrawing the boundaries to match real shadows would probably help.
- (Another Scott)
- (10)
- March 20, 2022, 12:37:05 PM EDT
Weird. Since the daylight is apparently distributed along a NW/SE axis, why are the time zones...
- (CRConrad)
- (9)
- March 21, 2022, 12:05:39 PM EDT
Legacy of the railroads.
- (Another Scott)
- March 21, 2022, 12:57:13 PM EDT
That's kind of the point
- (drook)
- (1)
- March 21, 2022, 08:47:23 PM EDT
when I first went to alaska in the 70's they had 4 time zones since collapsed into one for bidness
-NT
- (boxley)
- March 21, 2022, 11:13:36 PM EDT
Yeah guys, I knew both of those. But look at the colour bands' direction.
- (CRConrad)
- (5)
- March 22, 2022, 03:53:09 AM EDT
I don't know why the legends didn't transfer with the graphics.
- (Another Scott)
- (4)
- March 22, 2022, 09:18:11 AM EDT
Hmm, ""Time of the latest sunrise..."
- (CRConrad)
- (2)
- March 23, 2022, 04:05:28 AM EDT
Kinda sorta.
- (Another Scott)
- (1)
- March 23, 2022, 10:45:19 AM EDT
Aha -- so it straightens up and tips over?
- (CRConrad)
- March 23, 2022, 12:46:42 PM EDT
Mine will be 9:00 to 9:30
- (crazy)
- March 25, 2022, 01:25:22 AM EDT
