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Talk:Darian calendar

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The last paragraph, concerning Gangale orbits and modifications to the US Presidential Primary, seems offtopic for this page. Move to a seperate entry on Thomas Gangale? Alba 03:39, 2 Apr 2004 (UTC)

New Mars and other planet's calendar

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Whoa, I've found new version of Mars and other planet's calendar! Just call me if you want to know more....

NO ZERO

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In the dates, there's no zero. There should be. 2404:3C00:502F:4C80:55D:7EA:DA89:E90A (talk) 05:37, 4 March 2021 (UTC)[reply]

That's just, like, your opinion (and mine), man. —Tamfang (talk) 00:05, 12 July 2024 (UTC)[reply]

Important Dates Table Conversion

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Is there a source for the "Important dates in Martian history", or were all of these conversions done by hand? Perhaps someone can correct my math, but the conversions appear to use a fairly low degree of precision. To take the Viking 1 landing date as an example:

  Earth Epoch (Julian):        0
  Mars Epoch (Julian):         587311
  Viking 1 Landing (Julian):   721555

Thus the Viking 1 Landing, in Earth days but adjusted to the Martian epoch, would be:

  721555 - 587311 = 134244

Now as per the Timekeeping on Mars article, we have the following lengths for Martian and Terran solar days, respectively:

  Mars solar day:  24 h 39 m 35.244 s (88,775.244 seconds)
  Earth solar day: 24 h 00 m 00.002 s (86,400.002 seconds)

This means the conversion between the two should be, exactly:

  88,775.244 seconds per sol / 86,400.002 seconds per day = 1.02749122622 sols per day

Thus to convert the Julian date of the Viking 1 lander we previously adjusted to the Martian epoch from Earth days to Mars days, we should get:

  134,244 days / 1.02749122622 sols per day = 130652.210524

However, on the page the "Mars Julian date" for that event is 130,584. Unless I've done my math wrong somewhere, that's a pretty significant margin of error. If we work backwards,

  134,244 days / 130,584 sols = 1.02802793604

Not a super precise conversion factor. Off by almost 1/2 a percent. 67.250.117.56 (talk) 14:25, 21 January 2024 (UTC)[reply]