What would be easier with our conversation? I guess we are at the other side of the globe. I wasn’t answering because I was sleeping, you won’t answer immediately because you are sleeping, what would help if our clocked showed the same? Both of us sleep because the sun is down, not because the clock says something.
With long range space travel we will have to deal with the relativity of time as well. Lets say we define an Epoch and both of us do something exactly a googol second later but we live on a different planet, it wouldn’t be at the same time because of relativity. If I would say lets do something when it is 12:00 in London, UK, Earth, than you can convert it to your relativity and time zone.
About the intetplanetary usage of the current system, it’s already in effect, LTC aka Coordinated Lunar Time is already under development since this April.
On the moon, a smaller body where the gravitational pull is much weaker, time moves more quickly and unevenly: Lunar time gains about 58.7 microseconds per day compared to Earth’s time, though even this can vary, depending on the altitude and longitude where lunar clocks may be located.
“An atomic clock on the moon will tick at a different rate than a clock on Earth,” Kevin Coggins, manager of NASA’s Space Communications and Navigation Program, tells the Guardian’s Diana Ramirez-Simon. “It makes sense that when you go to another body, like the moon or Mars, that each one gets its own heartbeat.”
So the solution is to just convert between time zones, and resync them sometime because they can drift because of relativity.
I don’t know how a base 10 day would work, it just annoys me that its reform wasn’t successful with the metric system. But I don’t know how it will work when people will live on Mars. A day on Mars aka a Sol is 24 hours and 39 mins. Will they have “Mars hour” which equals 1 Earth hour and 1.6 Earth minutes? If not, they could simply use Earth hours, than it won’t be possible to create classic circular clocks.
Yeah, you can use an hour/day-based system elsewhere, but it’s goofy and has a lot of complications. If a separate culture were to grow up on the moon, they would start to wonder why their measurements are based on the particular natural rhythms of a place they’ve never been, except eventually out of sync completely.
We haven’t actually scheduled anything here, but if we were to I’d default to UTC like you said. The thing is, it’s just not as simple as a decimal count, and it has leap seconds, and there’s daylight savings and permanently changing timezones and physical relativity that can make it difficult to know what your current offset is. If we were to drop the requirement that the time has anything to do with the day/night cycle and the seasons, all that goes away.
The current system is definitely good enough, but it could be done better.
What would be easier with our conversation? I guess we are at the other side of the globe. I wasn’t answering because I was sleeping, you won’t answer immediately because you are sleeping, what would help if our clocked showed the same? Both of us sleep because the sun is down, not because the clock says something.
With long range space travel we will have to deal with the relativity of time as well. Lets say we define an Epoch and both of us do something exactly a googol second later but we live on a different planet, it wouldn’t be at the same time because of relativity. If I would say lets do something when it is 12:00 in London, UK, Earth, than you can convert it to your relativity and time zone.
About the intetplanetary usage of the current system, it’s already in effect, LTC aka Coordinated Lunar Time is already under development since this April.
https://www.smithsonianmag.com/smart-news/the-moon-will-get-its-own-time-zone-called-coordinated-lunar-time-under-nasas-lead-180984076/
So the solution is to just convert between time zones, and resync them sometime because they can drift because of relativity.
I don’t know how a base 10 day would work, it just annoys me that its reform wasn’t successful with the metric system. But I don’t know how it will work when people will live on Mars. A day on Mars aka a Sol is 24 hours and 39 mins. Will they have “Mars hour” which equals 1 Earth hour and 1.6 Earth minutes? If not, they could simply use Earth hours, than it won’t be possible to create classic circular clocks.
Yeah, you can use an hour/day-based system elsewhere, but it’s goofy and has a lot of complications. If a separate culture were to grow up on the moon, they would start to wonder why their measurements are based on the particular natural rhythms of a place they’ve never been, except eventually out of sync completely.
We haven’t actually scheduled anything here, but if we were to I’d default to UTC like you said. The thing is, it’s just not as simple as a decimal count, and it has leap seconds, and there’s daylight savings and permanently changing timezones and physical relativity that can make it difficult to know what your current offset is. If we were to drop the requirement that the time has anything to do with the day/night cycle and the seasons, all that goes away.
The current system is definitely good enough, but it could be done better.
The conversation is easier because we have a shared understanding of the time.
When you ask me can you call me at 13:00, I currently need to google what your timezone is and convert it to my timezone to know whether my sun is up.
If instead I just know when my sun comes up and goes down in UTC, I can immediately answer if I’m available at 13:00
Relativity does make space more difficult, but we’ll ultimately have to make some shared reference point there, too, as you’ve pointed out
But I have to google when the sun comes up for you, it’s literally the same thing.
In the context of I’m not available and you need to know when to call, sure
In the context of we’re currently talking and trying to plan when we’ll talk again, UTC is infinitely easier once you have 5 different people talking