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#76 2017-09-28 16:23:34

louis
Member
From: UK
Registered: 2008-03-24
Posts: 4,368

Re: Martian Calender - I have created a martian calender...

Short answer: they wouldn't celebrate Earth-bound festivals. They are on a different planet.  They would of course celebrate their own Mars New Year once every two Earth years, nearly. I believe we are genetically bound to the lunar cycle as we are the diurnal cycle.  I think a x2 Earth month period is just too long a time period for us, from a genetic point of view. I think a 40 sol time period would be better.

I'd like to see Mars have its own festivals.  A Terraformation Day for instance. A Science Day perhaps.  Let the people of Mars decide.   

Tom Kalbfus wrote:
louis wrote:

As above, I still favour four seasons of 167 sols, comprising 16 periods of ten sols (with those 16 periods further sub-divided into quarters of 4 x 10 sols) and a festival period of 7 days.  The ten sol periods would be the equivalent of our weeks.

So each sol year would comprise 16 quarters (4 quarters for each of the four seasons), and four festival periods. 


Tom Kalbfus wrote:

But we associate March with the beginning of spring. Mars has seasons, Earth has seasons, each part of the Earth year has its analog for Mars, so why not use 12 months but make them longer? There are a lot of cultural reasons for this. We are familiar with the month names of January through December, so why not use them for Mars as well? And since Earth Mars month is longer than its equivalent Earth month, we know where to put all the traditional holidays, in the first half of each Mars Month. Christmas would be o December 25th, and then you have half a Mars Month left before you celebrate New Years Day!

Okay, on what date would Martian colonists pop their Champaign corks and celebrate a New Year? When would they celebrate Christmas, Easter, Valentines Day, Halloween, Saint Patrick's Day?


Let's Go to Mars...Google on: Fast Track to Mars blogspot.com

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#77 2017-09-28 16:58:43

IanM
Member
From: Chicago
Registered: 2015-12-14
Posts: 267

Re: Martian Calender - I have created a martian calender...

As for formatting, I would greatly favor Year-Month-Day. It's the system we on this forum use, and it makes sorting by date easier.


The Earth is the cradle of the mind, but one cannot live in a cradle forever. -Paraphrased from Tsiolkovsky

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#78 2019-03-16 20:18:54

tahanson43206
Member
Registered: 2018-04-27
Posts: 268

Re: Martian Calender - I have created a martian calender...

SpaceNut ... stopping here while reading the "martian calender" topic

The work you did allows smooth reading.  Thanks for revealing Clark's 14 month calendar suggestion (for example)

We are a week out from New Years on Mars, and this topic seems a better fit for discussion of a calendar on Mars than RobertDyck's Holidays topic.

It was interesting seeing posts by a gent in Sweden (as another example).

(th)

SpaceNut wrote:

Fixed shifting topic issue and artifacts

Interesting topic for how to create a new calendar that sort of aligns with the one that we know so well. What would the new world be without our favor traditions coming along to help in celebrating them with loved ones still at home on Earth....

If anyone is interested in following the countdown to New Years on Mars, use the search tool.  Remove spaces.

s e a r c h t e r m(colon) and (colon)t o d a y o n m a r s

Use author: tahanson43206

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#79 2019-03-16 20:55:55

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 14,306

Re: Martian Calender - I have created a martian calender...

Had to dig to find this answer as to when is new years for mars but in this post is the data as you meantioned in the other topic.

Its sad that a few aliens meant no concerted effort to celebrate a mars that we will soon enough be on.

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#80 2019-03-17 12:37:11

tahanson43206
Member
Registered: 2018-04-27
Posts: 268

Re: Martian Calender - I have created a martian calender...

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 34        Martian Month in 12 month format: 12
Solar Longitude: 356.6        Sol Number: 663

Previous SL: 356.1        Previous Sol: 662

Note that Solar Longitude measurement varies as a function of location in orbit.

Sol 663 is in Month 24 of a Proposed 24 month calendar.  See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668
Sol 663 is Sunday in the Proposed calendar for Mars. It is the first day of the last week of the last month.

The New Year on Mars will occur when Solar Longitude reaches 360 degrees.

(th)

Last edited by tahanson43206 (2019-03-17 12:38:02)

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#81 Yesterday 07:16:05

tahanson43206
Member
Registered: 2018-04-27
Posts: 268

Re: Martian Calender - I have created a martian calender...

Per http://www-mars.lmd.jussieu.fr/mars/time.html

Martian Year: 34        Martian Month in 12 month format: 12
Solar Longitude: 357.1        Sol Number: 664

Previous SL: 356.6        Previous Sol: 663

Note that Solar Longitude measurement varies as a function of location in orbit.

Sol 664 is in Month 24 of a Proposed 24 month calendar.  See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668
Sol 664 is Monday in the Proposed calendar for Mars. It is the first day of the first week of the last month.

The New Year on Mars will occur when Solar Longitude reaches 360 degrees.

For current weather on Mars at Insight location, see:
https://mars.nasa.gov/insight/weather/

(th)

Last edited by tahanson43206 (Yesterday 08:09:29)

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#82 Yesterday 17:27:29

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 14,306

Re: Martian Calender - I have created a martian calender...

Just 3 more days for a Mars New year marking on the 21st.....

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#83 Yesterday 17:44:14

tahanson43206
Member
Registered: 2018-04-27
Posts: 268

Re: Martian Calender - I have created a martian calender...

For SpaceNut ...

Something to keep in mind is that the date of the 21st of March (on Earth) was chosen by the City of Mars, Pennsylvania.  The actual moment of transition will occur on the planet Mars a few days later, if the French web site I've been using is accurate. 

I have no way of confirming that the French site is accurate, and would appreciate someone finding additional resources.  This should be a knowable situation.

(th)

SpaceNut wrote:

Just 3 more days for a Mars New year marking on the 21st.....

Edit: I found an astronomical observer's web site which included a reference to the position of Mars with respect to the Sun:

http://www.nakedeyeplanets.com/mars.htm

On March 24th Mars reaches Western quadrature, when the planet is positioned 90° West of the Sun. The Martian disk now appears 8".0 across and it shines at magnitude +0.4. Theoretically, when seen from the Earth, Mars should now show its minimum illuminated phase, such that it appears significantly gibbous when seen through telescopes (in this case, 88% illumination). However, the eccentric nature of the Martian orbit is such that true minimum phase does not occur until April 12th, by which time its phase has reduced slightly further to 87%.

March 24th looks close to when the French web site is predicting 360 degrees.

(th)

Last edited by tahanson43206 (Yesterday 18:05:40)

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#84 Today 08:12:17

tahanson43206
Member
Registered: 2018-04-27
Posts: 268

Re: Martian Calender - I have created a martian calender...

Following up on #83 .... the quote from nakedeyeplanets.com referred to Mars being West of the Sun on March 24th (Earth calendar).  I had not run into that reference frame before, so went looking for help.  A (potentially) useful resource showed up as an article by a NASA engineer who does celestial navigation. I do not have an answer to where "West of the Sun" came from, but the article referred to 15 frames of reference which may be in use for the International Space Station.  One of these is called ICRS, and it may be worth investigating.


https://www.huffingtonpost.com/quora/a- … 49698.html

Answer by Robert Frost, NASA Engineer with specialization in spacecraft operations, orbital mechanics, and guidance, navigation and control systems

But, currently we care about how things are located with respect to our solar system. For that, a frame called ICRS (International Celestial Reference System) is commonly used. It is a quasi-inertial frame centered on the barycenter of our solar system. It is maintained by tracking the positions of almost three hundred sources outside our galaxy (e.g. quasars).

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#85 Today 12:06:13

tahanson43206
Member
Registered: 2018-04-27
Posts: 268

Re: Martian Calender - I have created a martian calender...

Today on Mars:

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 34        Martian Month in 12 month format: 12
Solar Longitude: 357.6        Sol Number: 665

Previous SL: 357.1        Previous Sol: 664

Note that Solar Longitude measurement varies as a function of location in orbit.

Sol 665 is in Month 24 of a Proposed 24 month calendar.  See Post 19 of Holiday topic for a summary.
Month 24 extends from Sol 642 through 668
Sol 665 is Tuesday in the Proposed calendar for Mars.

The New Year on Mars will occur when Solar Longitude reaches 360 degrees.
For current weather on Mars at Insight location, see:
https://mars.nasa.gov/insight/weather/

(th)

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