High School Keeping Time on Mars: A New Calendar System?

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SUMMARY

The discussion centers on the necessity of a new calendar system for Mars colonists, considering the unique Martian timekeeping challenges. A Martian year, or "sol," consists of 669 Earth days, and initial colonists may rely on Earth-based time systems, such as GMT, while developing their own methods over time. The conversation highlights the potential for 24 Martian time zones and the use of conversion tools for synchronization with Earth. Participants suggest that a separate Mars calendar may not be essential until colonies achieve greater independence.

PREREQUISITES
  • Understanding of Martian timekeeping concepts, including "sol" and its duration.
  • Familiarity with Earth time systems, particularly GMT and UTC.
  • Knowledge of conversion tools for time synchronization between different planetary systems.
  • Awareness of current Mars missions and their operational timekeeping methods.
NEXT STEPS
  • Research the implications of a 669-sol Martian year on human activities.
  • Explore the existing timekeeping systems used by NASA's Jet Propulsion Laboratory (JPL) for Mars missions.
  • Investigate the potential development of a Martian calendar as colonies grow more independent.
  • Learn about the use of atomic clocks and other timekeeping technologies in space exploration.
USEFUL FOR

Aerospace engineers, space mission planners, and anyone interested in the future of human colonization on Mars and the complexities of extraterrestrial timekeeping.

lifeonmercury
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Once humans begin arriving on Mars in the next decade or two, how will they keep time and organize their calendar? Will a special Mars date and time system need to be developed or will the colonists (at least initially) stay on pace with the Earth-based system of 24-hour days and 12-month years?
If the colonists were indeed to use their own system featuring a 669-sol Martian year, I assume some sort of simple conversion tool would be necessary (like Fahrenheit to celsius) to coordinate with Earth. To complicate things even more, Mars would probably also have its own 24 time zones.
 
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lifeonmercury said:
Once humans begin arriving on Mars in the next decade or two ...
I admire your extreme optimism.
 
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I figured someone would! Any thoughts about the Martian calendar?
 
lifeonmercury said:
I figured someone would! Any thoughts about the Martian calendar?
No. I'm an old, practical engineer and will be long dead before we have a colony on Mars. I'm going to leave it to them to figure out.
 
lifeonmercury said:
Once humans begin arriving on Mars in the next decade or two, how will they keep time and organize their calendar? Will a special Mars date and time system need to be developed or will the colonists (at least initially) stay on pace with the Earth-based system of 24-hour days and 12-month years?
If the colonists were indeed to use their own system featuring a 669-sol Martian year, I assume some sort of simple conversion tool would be necessary (like Fahrenheit to celsius) to coordinate with Earth. To complicate things even more, Mars would probably also have its own 24 time zones.

Since at least early colonies will likely be underground, there will not much of a need for official time to keep pace with the Sun or the seasons, keeping step with Earth time(GMT and date would likely be the norm. There will be those disciplines that would need to keep track of these things, but they would likely develop their own system much like astronomers today use the Julian year. I see no need for adopting time zones at all.
 
The Moon would almost certainly stay on the Earth calendar, with the entire Moon being in the US Eastern time zone.
It's just a lot more complicated with Mars.
 
lifeonmercury said:
with the entire Moon being in the US Eastern time zone.

Including Daylight Savings Time?
 
lifeonmercury said:
I figured someone would! Any thoughts about the Martian calendar?
Here is a thought on Martian time zones, JPL when dealing with MSL operations has a system worked out to equate Earth time and Martian time. This is only relevant when comparing a JPL's worker shift with what curiosity is currently doing but it gives an interesting perspective on the difference between a "Sol" and a "day" http://msl-scicorner.jpl.nasa.gov/scienceoperations/
For further reading I think https://en.wikipedia.org/wiki/Timekeeping_on_Mars may be useful as a starting point.
 
When the first group of people land on Mars, I think they can just keep a tool (such as a atomic clock maybe?) displaying the time on the earth. Thought it may be a little bit uncomfortable and confusing...
 
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The settlements will be underground in some way, but there will be many surface operations - I'm quite sure people will use the 24h 37min cycle of sols.

A separate Mars calendar won't be necessary for a long time. Just count Sols, as they do with current Mars missions. A Mars-based calendar might arise over time if a colony starts getting more and more independent.
lifeonmercury said:
The Moon would almost certainly stay on the Earth calendar, with the entire Moon being in the US Eastern time zone.
Not even the ISS, where the US contributed the most, uses any US time zone. They use UTC.
 

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