Discordian
Planetary
Time
10 Planetary hours = 1 Earth day = 24 Grayface hours
1 Planetary hour = 0.1 days = 2.4 Grayface hours (2:24)
1 Planetary minute = 0.01 hour = 1.44 Greyface minutes (1:36)
1 Planetary second = 0.01 minute = 0.864 Grayface seconds
Back in the old days, the world was on many conflicting systems of keeping time. While three-quarters time might prevail in one area, elsewhere it was spare time or springtime or due time or ragtime.
Exactly 136 years ago, a bunch of pundits from all over the world met in Washington, DC, eventually deciding everyone should employ Standard Time (used by Standard Oil of New Jersey), based on Greenwich Mean Time (the time I was using in the meantime in Greenwich Village).
Far from being reasonable, or even perfect, this solution allows it to be one time in London at the exact moment it is some other time entirely in New York or San Francisco or Moscow; this is a wholly untenable situation.
Discordian Planetary Time is a single planetary decimal time. In Greyface time, the clock shows the correct time only in Greenwich Village and surroundings, while Discordian time on the whole planet is the same; that is, in some places dawn is usually around 1 o’clock, while in the opposite side of the world it is at 6 o’clock.
The beginning/end of a Discordian day (0 hours, 0 minutes, 0 seconds) on Earth coincides with midnight, Greyface time, on Easter Island (because of the big gray faces, you see) on winter time (UTC-5). This means that (absent Daylight Savings Time) Discordian midnight is at 5 AM Grayface time in London, but at 10 PM Greyface time on the US West Coast.
There are ten hours per Planetary day, one hundred minutes per Planetary hour, and one hundred seconds per Planetary minute.
If we ever make it to Mars, a Martian Planetary hour would be 2 Greyface hours, 27 minutes, and 44 seconds. On Venus, a single Venusian Planetary hour is 24 days, 7 hours, and 12 minutes; a VP second is about 3 minutes, 30 seconds. On the dwarf planet Eris, one Erisian Planetary hour is 2 hours, 35 minutes, and 24 seconds.
Credit to Erisian Time