[tz] Time for a Lunar time zone? -Brooks

[Brooks Harris]

On 2023-03-02 04:47 PM, Paul Eggert wrote:
> On 3/2/23 09:51, Brooks Harris wrote:
>> Will we need DST on the Moon? :-)
>
> I hope not! The Moon's axis tilts only 1.5°, much less than the 23.5° 
> of Earth's axis, so seasonal effects on sunlight duration are much 
> less intense on the Moon and there should be less need for Earth-like 
> DST.
>
> A more pressing issue is that the length of day (including daytime and 
> nighttime) varies more on the Moon.
>
> Local Earth days vary by at most 0.008 hours from the mean of 24 hours 
> (this variation is due to the eccentricity of the Earth orbit and the 
> obliquity of the ecliptic). So people who think that every local Earth 
> day is exactly 24 hours are not far off.
>
> Local lunar days, in contrast, are roughly 29.5 ± 0.25 Earth days 
> (again, this includes both lunar daytime and lunar nighttime). That's 
> more slop to deal with, relatively speaking, and dealing with 
> varying-length days could be a bit of a problem for civil time on the 
> Moon.
>
> Presumably ESA's boffins are on top of this.....
>
Researchers more precisely calculate how much faster time passes on the moon
https://phys.org/news/2024-07-precisely-faster-moon.html