4 ms·
Why? Just use UTC, there is zero reason for anything else. ETA: There is a minor relativistic issue due to the reduced gravity. If the figures I found online a
by bradley13 3y ago
Why? Just use UTC, there is zero reason for anything else.
ETA: There is a minor relativistic issue due to the reduced gravity. If the figures I found online are correct, we are talking about 0.02 seconds per year. Surely such a small difference can just be "smeared" away periodically?
- alexdns 3y agoTime dilation - the moon time runs at different pace due to gravity
- thfuran 3y ago0.02 seconds per year is about 55,000 nanoseconds per day, which is kind of a big deal as far as the high precision CPU timers are concerned.
- AdamH12113 3y agoI'm not sure about the larger issues surrounding the lunar time standard, but 55 microseconds per day is about 0.64 ppb. Even good OCXOs drift more than that. A standard crystal oscillator like the kind used in computers drifts by multiple seconds per day. Unless your oscillator costs more than your computer, that kind of accuracy is going to be beneath the noise floor.
- thfuran 3y agoYou're right that CPUs probably weren't the best example. My point was more that there are everyday things that operate at timescales where nanoseconds matter. 55 us per day is larger than the effects of either special or general relativity on GPS, but both need to be accounted for in order for the system to be useful.
- MeImCounting 3y agoThe issues arent arising from cellphones and personal computers. Precise time may not be necessary for building web services but it is the basis of precise navigation systems and other scientific endeavors such as astronomy and quantum computing. Since navigation and science will probably be way up on the todo list above twitter I think nanosecond accuracy lunar time is clearly justified.