Day Light Savings

[Jim Becker]

What I hate is signs and notes that say 12:00 Am or 12:00Pm. There is no such time! Teachers in my district where told if a assignment had to be submitted by midnight set it as 11:59 PM. Or 12:01Am.
Bill D

I’ve always known 12am to be midnight, and 12pm to be noon. If you say 12am and 12pm don’t exist, what does 12:00 mean?

My computer thinks the same as Jason regarding 12:00

This kind of thing is exactly why I prefer the 24 hour clock... But that's kinda like discussing, um...metric vs Imperial I suspect.

[mike stenson]

I’ve always known 12am to be midnight, and 12pm to be noon. If you say 12am and 12pm don’t exist, what does 12:00 mean?

Using a 24 hour clock resolves this, at least on things like train schedules. So much easier to deal with.

[Jim Koepke]

I’ve always known 12am to be midnight, and 12pm to be noon. If you say 12am and 12pm don’t exist, what does 12:00 mean?

What I hate is signs and notes that say 12:00 Am or 12:00Pm. There is no such time! Teachers in my district where told if a assignment had to be submitted by midnight set it as 11:59 PM. Or 12:01Am.
Bill D

My computer thinks the same as Jason regarding 12:00

This kind of thing is exactly why I prefer the 24 hour clock... But that's kinda like discussing, um...metric vs Imperial I suspect.

An engineer who was a co-worker used to argue about this. His feeling was that 12:00 noon and 12:00am were the same thing. It gave me the feeling he showed up at the wrong time for something and was trying to defend his error. My point was that 12:00n and one nanosecond fell into the realm of PM. 12:00m and one nanosecond was in the realm of AM. He didn't like my reasoning.

For fun and clarity it may be better to say "high noon" or "midnight."

One of my employers was a public transit agency. Using the 24 hour clock made sense there. Though it never was natural for me. Always had to do a little mental math.

jtk

[Lee DeRaud]

For fun and clarity it may be better to say "high noon" or "midnight."

I had several coworkers who considered the phrase "high noon" to be aspirational.

[Lee DeRaud]

One of my employers was a public transit agency. Using the 24 hour clock made sense there. Though it never was natural for me. Always had to do a little mental math.

Growing up as an Air Force brat, I always thought of the 24-hour clock as "military time".
It wasn't until I was in grad school that I realized anybody else used it.

[Jim Koepke]

I had several coworkers who considered the phrase "high noon" to be aspirational.

I've worked with people like that and avoided them after "high noon" if they were operating any machinery or other dangerous equipment.

jtk

[Jim Becker]

Growing up as an Air Force brat, I always thought of the 24-hour clock as "military time".
It wasn't until I was in grad school that I realized anybody else used it.

I actually do use it 'cause I like it, but obviously have to adjust when communicating with people

[Lee Schierer]

The military uses the 24 hour clock to avoid confusion regarding time.

[Lee DeRaud]

The military uses the 24 hour clock to avoid confusion regarding time.

Not to mention GMT "Zulu" time...

[Roger Feeley]

Split the difference bump it up 1/2 hr. That will really get them going!

John,
I’ve been thinking the same thing. This is not a choice between standard or daylight times. We can choose any value between the two.

here’s a question. I would assume that somewhere in each of the time zone is a meridian that matches solar time. I found something that suggests that the match is not in the center of the zone but towards the eastern edge. If that’s the case, I wonder why. Would it also make sense to readjust the zones?

[Michael Schuch]

The last change in 2007 was a pain in the rear when the change dates went from April to March and from October to November. It made keeping old records (like medical records) a pain in the rear since GMT to local DST was no longer a straight forwards conversion. This change will be easier but still require code changes to account for the new rules. I am all for making it permanent but really don't look forwards to diving into all that old legacy code again.

[Jason Roehl]

The military uses the 24 hour clock to avoid confusion regarding time.

I use it for myself, but automatically convert for others’ sake when communicating. I’ve been doing that so long that it’s second nature.

[Rob Luter]

I was one of those kids walking to the bus stop (1/2 mile) in the dark, on our country roads with no shoulder, just a ditch. It was not fun, let me tell you.
Light, dark, it doesn't matter, the work still needs to get done. Adjust your schedule and leave the clock alone.
Pick one and stick with it, then people can find something else to complain about every six months.

Exactly my story. I live on the Western edge of the time zone and for my whole life have never awakened to sunlight on a work day or school day. In the summer it stays light until almost 11:00. When I moved to Indiana in 1994, we didn't observe DST. It was glorious. I got to wake up to the sun and birds and drive to work in daylight. It got dark at a reasonable time of night. Then a pack of idiots at the State house decided we were viewed as bumpkins for not changing, and shoved through a measure that had us join the insanity. I really think they were chapped because they couldn't get a full 18 holes in after work.

I get that those living at the Eastern edge of the zone have a completely different viewpoint. I'd hate for it to get dark at 4:00 PM in the winter too.

[Jim Becker]

I use it for myself, but automatically convert for others’ sake when communicating. I’ve been doing that so long that it’s second nature.

Ditto for me, Jason....

[Edward Weber]

If you've ever had to get up at different times during a week for a job or school or whatever, I don't think it's a big deal. You can adjust your own personal schedule much easier than changing the reference time the entire country uses.
If you normally start work at 8am for one half of the year, your boss could simply say, for the next six months we'll be starting at 9am. Doesn't sound so hard to me.
Many professions work when there's sunlight, regardless of what time the clock says, always have and probably always will. "Sun up" is at a different time everyday.
The whole concept has outlived whatever benefit it was supposed to provide. IMHO