Daylight Savings Time. A poll.

[McDad]

There are multiple levels to the adjustments. not every 4 years do we get a leap day, according to wiki its every 100 years we DON'T add a leap day. but we do every 400 years.

exceptions on exceptions.

Leap year - Wikipedia

en.wikipedia.org

it boils down to the astronomical rotation of the planet doesn't line up cleanly with any way of "scheduling" time anyone currently has. and it happens on such a scale it doesn't make sense to adjust everyday life for something that won't happen in your kids, kids, kids......, kids lifetime.

This is such a weird topic and convo.

Feb 29 happens every 4 years. I thought Feb 29 is our leap day. And I though if the year had a Feb 29 then that year is called a "leap year".

Am I cooked on my understanding???

 

[OrangeTsar]

There are multiple levels to the adjustments. not every 4 years do we get a leap day, according to wiki its every 100 years we DON'T add a leap day. but we do every 400 years.

exceptions on exceptions.

Leap year - Wikipedia

en.wikipedia.org

it boils down to the astronomical rotation of the planet doesn't line up cleanly with any way of "scheduling" time anyone currently has. and it happens on such a scale it doesn't make sense to adjust everyday life for something that won't happen in your kids, kids, kids......, kids lifetime.

The calculation of leap years is a common exercise every time you are learning a new programming language so I have ran into it many times. Yeah it is complicated.
And then when you throw in the equation of time (minutes the sun is ahead of or behind mean solar noon) which changes throughout the year. And then you have the fact that the earth is gradually slowing down in its spin hence the need to add „leap seconds“ every so often. Timekeeping is a very complicated subject, at least at the astronomical level. For civil timekeeping however is based on the concept that in each of the 24 time zones. The average solar noon should be when the sun is at its highest point at noon at the center of the time zone. It of course never meets that goal correctly but standard time is the best approximation that we have available.
Readings on celestial navigation, especially the effort to find a solution to the „longitude problem“ and how it led to the creation of ever more accurate clocks throughout the 18th and 19th century along with readings about how the problems of scheduling train stops in the 19th century led to the creation of standardized time zones make for fascinating study if you are into that sort of thing.

 

[McDad]

The calculation of leap years is a common exercise every time you are learning a new programming language so I have ran into it many times. Yeah it is complicated.
And then when you throw in the equation of time (minutes the sun is ahead of or behind mean solar noon) which changes throughout the year. And then you have the fact that the earth is gradually slowing down in its spin hence the need to add „leap seconds“ every so often. Timekeeping is a very complicated subject, at least at the astronomical level. For civil timekeeping however is based on the concept that in each of the 24 time zones. The average solar noon should be when the sun is at its highest point at noon at the center of the time zone. It of course never meets that goal correctly but standard time is the best approximation that we have available.
Readings on celestial navigation, especially the effort to find a solution to the „longitude problem“ and how it led to the creation of ever more accurate clocks throughout the 18th and 19th century along with readings about how the problems of scheduling train stops in the 19th century led to the creation of standardized time zones make for fascinating study if you are into that sort of thing.

Im kinda geeking out over the complexity of something I encounter everyday without a second thought.

 

[Thunder Good-Oil]

I find it very weird that the moon’s spin keeps the same part aimed at us all the time. What do the aliens have going on on the far side of the moon?

 

[LouderVol]

The calculation of leap years is a common exercise every time you are learning a new programming language so I have ran into it many times. Yeah it is complicated.
And then when you throw in the equation of time (minutes the sun is ahead of or behind mean solar noon) which changes throughout the year. And then you have the fact that the earth is gradually slowing down in its spin hence the need to add „leap seconds“ every so often. Timekeeping is a very complicated subject, at least at the astronomical level. For civil timekeeping however is based on the concept that in each of the 24 time zones. The average solar noon should be when the sun is at its highest point at noon at the center of the time zone. It of course never meets that goal correctly but standard time is the best approximation that we have available.
Readings on celestial navigation, especially the effort to find a solution to the „longitude problem“ and how it led to the creation of ever more accurate clocks throughout the 18th and 19th century along with readings about how the problems of scheduling train stops in the 19th century led to the creation of standardized time zones make for fascinating study if you are into that sort of thing.

yeah, its kinda cool to think about that before trains there was never a real reason every town needed to be on the same time. it took a while to get anywhere, and there weren't scheduled services that took you to various places where you needed to coordinate time. so most towns/states had their own time.

its one of those tropes that got picked up in some western period movies with the stranger coming to town and asking what time it was, or checking the church clock tower and adjusting their watch. it wasn't necessarily because the watch was bad and "losing" or "gaining" time, but probably more with each town having a different "time" and needing to adjust to the locality.

 

[McDad]

I find it very weird that the moon’s spin keeps the same part aimed at us all the time. What do the aliens have going on on the far side of the moon?

I think that is where Pink Floyd practices their music.

 

[McDad]

its one of those tropes that got picked up in some western period movies with the stranger coming to town and asking what time it was, or checking the church clock tower and adjusting their watch. it wasn't necessarily because the watch was bad and "losing" or "gaining" time, but probably more with each town having a different "time" and needing to adjust to the locality.

Had no idea. TIL.

 

[LouderVol]

This is such a weird topic and convo.

Feb 29 happens every 4 years. I thought Feb 29 is our leap day. And I though if the year had a Feb 29 then that year is called a "leap year".

Am I cooked on my understanding???

yes a leap year is any year that contains a leap day (Feb 29). but there are other adjustments that aren't tracked the same way, the leap seconds, are micro adjustments that I think happen every year, not just every 4 years.

as to the rest you have the basics down, but there are complexities.

the year 2000 was the exception to the exception, so most people don't realize it was an exception.

exception 1) most "hundred" year years do not have a leap day, even though that is divisible by 4 as a normal leap year is figured.

but 2000 fell on the four hundred double exception 2), that does still have a leap day.

so for modern perspectives from 1901-2099 there has never been the first exception, so people won't know about it. why tell people its, the year 2000, is a double exception if it looks exactly like the "normal"?

 

[LouderVol]

Had no idea. TIL.

time was a lot more...malleable/less structured even 100 years ago. its one of those things that goes into the science of people studying if time is actually real as a "law" of the universe. general thought right now is that no it isn't. even beyond the absurdities of a black hole our perception of time can vary dramatically.

 

[McDad]

yes a leap year is any year that contains a leap day (Feb 29). but there are other adjustments that aren't tracked the same way, the leap seconds, are micro adjustments that I think happen every year, not just every 4 years.

as to the rest you have the basics down, but there are complexities.

the year 2000 was the exception to the exception, so most people don't realize it was an exception.

exception 1) most "hundred" year years do not have a leap day, even though that is divisible by 4 as a normal leap year is figured.

but 2000 fell on the four hundred double exception 2), that does still have a leap day.

so for modern perspectives from 1901-2099 there has never been the first exception, so people won't know about it. why tell people its, the year 2000, is a double exception if it looks exactly like the "normal"?

Seriously enjoying these revelations.

This is right up your alley of obscure knowledge that is inconsequential but you know a lot about for some inexplicable reason.

Did you ever use it like you did about civil war trivia as a way to meet girls?

 

[OrangeTsar]

I find it very weird that the moon’s spin keeps the same part aimed at us all the time. What do the aliens have going on on the far side of the moon?

Not aliens….:Nazis

 

[LouderVol]

Seriously enjoying these revelations.

This is right up your alley of obscure knowledge that is inconsequential but you know a lot about for some inexplicable reason.

Did you ever use it like you did about civil war trivia as a way to meet girls?

I learned to curtail it unless it actually comes up in conversation.

my now wife learned very quickly that I don't like open ended questions, or questions she doesn't expect an answer to. it bothers my 'tism to have a questioned asked and just accept there is no answer because one couldn't be bothered to google it for 20 seconds.

 

[McDad]

I learned to curtail it unless it actually comes up in conversation.

my now wife learned very quickly that I don't like open ended questions, or questions she doesn't expect an answer to. it bothers my 'tism to have a questioned asked and just accept there is no answer because one couldn't be bothered to google it for 20 seconds.

You got a touch of the 'tism. But she loves you anyway.

 

[LouderVol]

You got a touch of the 'tism. But she loves you anyway.

she does.

 

[OrangeTsar]

Seriously enjoying these revelations.

This is right up your alley of obscure knowledge that is inconsequential but you know a lot about for some inexplicable reason.

Did you ever use it like you did about civil war trivia as a way to meet girls?

Roman trivia is helpful too, right? SPQR baby!!!!!

 

[Volnanza]

After working a 12 hour rotating schedules for over 20 years, I never know what time it is. Changing the clock by an hour has little effect on me. My circadian rhythm is totally shot.

 

[StarRaider]

The calculation of leap years is a common exercise every time you are learning a new programming language so I have ran into it many times. Yeah it is complicated.
And then when you throw in the equation of time (minutes the sun is ahead of or behind mean solar noon) which changes throughout the year. And then you have the fact that the earth is gradually slowing down in its spin hence the need to add „leap seconds“ every so often. Timekeeping is a very complicated subject, at least at the astronomical level. For civil timekeeping however is based on the concept that in each of the 24 time zones. The average solar noon should be when the sun is at its highest point at noon at the center of the time zone. It of course never meets that goal correctly but standard time is the best approximation that we have available.
Readings on celestial navigation, especially the effort to find a solution to the „longitude problem“ and how it led to the creation of ever more accurate clocks throughout the 18th and 19th century along with readings about how the problems of scheduling train stops in the 19th century led to the creation of standardized time zones make for fascinating study if you are into that sort of thing.

Not a programmer but when instrument shops set up programmable logic controllers, they mention that the PLCs do a "time sync" every 24 hours (usually at midnight). I guess this is why they do this?

 

[Orangeburst]

when changing your clocks, dont mess up ur AM PM boys.

 

[OrangeTsar]

Not a programmer but when instrument shops set up programmable logic controllers, they mention that the PLCs do a "time sync" every 24 hours (usually at midnight). I guess this is why they do this?

That is probably more to make sure that they all stay in sync. With PLCs controlling actual moving machines in a carefully choreographed sequence, I assume they want to make sure everything is within a few thousandths of a second in agreement.

 

[StarRaider]

d@mn you golf industrial complex!

 

[WoodsmanVol]

Arizona does just fine without DST. So can everyone else.

 

[StarRaider]

today, and eggspeciality tomorrow mornin' .... i stand with the libertareanians

 

[YankeeVol]

The US kept Daylight Saving Time permanent during most of World War II. The idea was put in place to conserve fuel and keep things standard. As the war came to a close in 1945, Gallup asked respondents how we should tell time. Only 17% wanted to keep what was then called “war time” all year.

In the US, states are not required by law to “fall back” or “spring forward.” Hawaii, most of Arizona and some territories in the Pacific and Caribbean do not observe Daylight Saving Time.

 

[YankeeVol]

We also know that people suffer more heart attacks at the start of Daylight Saving Time.

 

[marcusluvsvols]

I don’t get why the farmers can’t ignore the clock and just get up an hour earlier in the summer.

Its way more than just farmers. Construction workers, landscapers, anyone who works outside is affected. Your point still stands regardless though. I have worked outside for 30 years straight and dont feel strongly about this issue on either side. We are gonna work from daylight til dark in the winter, and from daylight til exhaustion in the summer no matter what the clock says so I get your point.