What calendar would the Saturn nation use?

In my next novel, there are three major powers in the solar system: Earth, Mars, and Saturn. Earth runs on a slightly modified Gregorian calendar, Mars goes with the good old Darian calendar, and Saturn... well, I'm really not sure what to do with Saturn.

The Saturnian calendar must:

• be cyclical; while it doesn't have to use years per se, it must have some similar sort of cycle by which to measure large spans of time.
• Use Saturn, Jupiter, and Uranus as reference points.
• Have days. Humans still sleep.
• Not be an endless count up like Unix time or Mars mission sol counts.
• Tick at humanly relatable intervals. If each cycle is defined as a Uranian year, that's just ridiculous.

Other important background information:

• The people of Saturn live on the moons thereof, as well as in various satellites. No wonky gas giant creatures.
• The nation of Saturn holds territory on the moons of Jupiter, as well as a monopoly on territory around Uranus. Uranus is essential to their continued survival as a nation, because the Helium-3 that powers their ships comes from there.
• The Saturnian calendar was designed recently and from scratch, so it's not quite as prone to historical weirdness as the Gregorian one.

What sort of calendar would humans settling the moons of the inner three gas giants use?

posted over 5 years ago

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