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Topic: Timekeeping on Mars

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	Timekeeping on Mars - Wikipedia, the free encyclopedia
		One proposed counterpart on Mars is the Mars Sol Date, or MSD, which is a running count of sols since approximately December 29, 1873 (in principle any start date (known as the "epoch") could be used; however, it should be far enough in the past that all historically recorded events occur after the epoch).
		The Mars Sol Date is defined mathematically as MSD = (Julian date using International Atomic Time - 51549.0 + k)/1.02749125 + 44796.0, where k is a small correction of approximately 0.00014d (or 12sec) due to uncertainty in the exact geographical position of the prime meridian at Airy-0 crater.
		On Mars, the northward equinox year is 668.5907 sols, the northern solstice year is 668.5880 sols, the southward equinox year is 668.5940 sols, and the southern solstice year is 668.5958 sols.
	en.wikipedia.org /wiki/Timekeeping_on_Mars (1937 words)

	Colonization of Mars - Wikipedia, the free encyclopedia
		Mars is much colder than Earth, with a mean surface temperature of -63°C and a low of -140°C. There are no standing bodies of liquid water on the surface of Mars.
		Still, conditions on Mars are much closer to habitability than the extremely hot and cold temperatures on Mercury, the furnace-hot surface of Venus, or the cryogenic cold of the outer planets.
		The Mars Gravity Biosatellite experiment is due to become the first experiment testing the effects of partial gravity, artificially generated at 0.38 g to match Mars gravity, on mammal life, specifically on mice, throughout the life cycle from conception to death.
	en.wikipedia.org /wiki/Colonization_of_Mars (2110 words)

	The Book of THoTH (Leaves of Wisdom) - Mars
		Mars has two moons, Phobos and Deimos, which are small and oddly-shaped and are possibly captured asteroids.
		Mars can be seen from Earth by the naked eye with a brightness of up to -2.9 magnitude, only surpassed by Venus, the Moon and the Sun.
		Shortly after the landing of the Mars Exploration Rovers in 2004, it was announced by a large group of scientists that they had conclusive evidence that liquid water existed at one time on the surface of Mars.
	book-of-thoth.com /thebook/index.php?title=Mars (3681 words)

	Mars Timekeeping System
		For example Tom was born in orb 12 on sol 277, his sister in orb 13 on sol 512.
		But since in timekeeping the unit of a second is not used on Mars, all scientific units derived therefrom such as meters per second, kilometers per hour, newtons, watts and relationships between Martian units have to be developed precisely (see comparison of Earth and Mars data).
		The location of Mars is shown by a lit mark on the outer orbit, the position of Earth by a lit dot on the inner orbit.
	pweb.jps.net /~gangale3/krutein/Marstime2.html (2805 words)

	mars (Site not responding. Last check: 2007-11-02)
		The fiery appearance of Mars is caused by iron(III) oxide (rust) on its surface.
		Mars has seasons, which of all of the planets are the most Earth-like due to the similar tilts in their rotational axes.
		Mars has an eccentricity higher than most of the other planets in the solar system, and has an average distance from the Sun of roughly 230 million km (1.5 AU).
	hometown.aol.de /zidovzak/wo-27729.html (4301 words)

	Time Keeping on Mars
		Although colonization of Mars is not likely to begin any time soon, the possibility of a civilization there does raise some interesting questions about time keeping.
		Mars has its own cycles: years, days, seasons, etc. and they are different than those on Earth.
		Any newsarticle about Mars using Martian dating would require a footnote explaining that the Martian calendar has 20 months and that, for example Quindecaber is the 15th month and that this would be late fall in the northern hemisphere, and so on.
	www.go2zero.com /adechert/scrib3.htm (1952 words)

	Timekeeping in the Interplanetary Internet (Site not responding. Last check: 2007-11-02)
		The Mars segment consists of orbiters, base stations and rovers near and on Mars.
		In the Mars internet, orbiters and surface stations may have only intermittent connectivity, while in the DSN segment real-time connectivity is possible only at scheduled opportunities and then only with very long delays.
		For instance, NTP between Mars orbiters and the surface is no different than NTP between Earth orbiters and the ground.
	www.eecis.udel.edu /~mills/ipin.html (3569 words)

	SurfChateau - A Timekeeping System For Mars
		Mars should operate on a 6-day "week," with four 25-hour weekdays, followed by two 24-hour weekends.
		Thus, astronomical observations, which are one of very few tasks that depend on a "clockwork" constant day, would not suffer from this timekeeping system.
		Switching time-zones between Mars and Earth would thus involve adjusting the hour, but not fiddling with minutes or seconds (or worse yet, converting to and from a Mars-based unit of time)!
	pweb.jps.net /~gangale3/weiss/rover.html (743 words)

	Timekeeping on Mars - The Naked Scientists Science Discussion Forum (Site not responding. Last check: 2007-11-02)
		In terms of measuring the orbital position of Mars, it is probably going to be at least as significant for people to know the relative orbital position of Mars relative to the Earth (i.e.
		However, the Mars day is so similar to the Earth day that it seems somewhat logical to divide the Mars day up into 24 pieces as on Earth, etc. Whkich would necessarily require the definition of a new unit of time, a Mars-second, which would be a little different from that on Earth.
		The state of Mars' atmosphere varies significantly with the position in its orbit, apparently chiefly due to the distance from the sun.
	www.thenakedscientists.com /forum/index.php?topic=4953 (1313 words)

	A Calendar for Mars
		Mars has a year consisting of 669 Martian days, or "sols", each of which consists of 24 hours and 39.6 minutes of terrestrial time.
		Place a penny, representing Mars, on the diamond on Mars' orbit (red) labeled "93", and a nickel, representing Earth, on the diamond on Earth's orbit (blue) at the beginning of January.
		Thus, during February 1993, Mars was in the Month of Cancer, but a line parallel to Earth-Mars drawn through the Sun at that time would go through Gemini, and this is the constellation Mars was seen in by observers on Earth at that time.
	users.ameritech.net /kroche/zubrin.html (2860 words)

	Mars Live! (Site not responding. Last check: 2007-11-02)
		For a colony on Mars, people will need to communicate with each other and communicate with families, friends, and associates back on Earth.
		The difficulties in sending and receiving messages from Mars to Earth (and vice versa) have to do with the large distance between the planets.
		When humans begin colonizing Mars, they will also leave behind their familiar 24-hour day and the 365-day year.
	www.isset.org /earth_to_mars/communication_systems.htm (312 words)

	The Mars Ring (Site not responding. Last check: 2007-11-02)
		The Mars Ring links quality sites concerning all aspects of the red planet, from science, space travel and astronomy to sci-fi, mythology and the outer limits.
		Temples of Mars, Bellona, Minerva, Victoria, Cernunnos, Tyr, Ares, Mangal, and Nergal.
		The Mars Society is actively involved in both promoting the exploration and settelment of mars and in planning how to do it.
	d.webring.com /hub?ring=mars (881 words)

	Sunday on Mars
		When it is noon on Mars in a given location, the place where it is noon on Earth, thus determining the day of the week for that Martian location, is either in the Eastern hemisphere or the Western hemisphere.
		Generally speaking, though, most people on Mars will have no interest in resorting to such an elaborate scheme to keep the days of the week on Mars in harmony with the days of the week on Earth.
		However, it seems likely that people on Mars concerned with maintaining a connection to the day of the week on Earth would also wish to maintain a connection with at least some of the holidays tied to the seasons on Earth.
	www.quadibloc.com /science/cal0504.htm (1929 words)

	Mars at 12:30 AM
		Mars at 12:30 AM In case anybody is interested:
		Mars will be the brightest in the night sky starting August.
		The next time Mars may come this close is in 2287.
	musicals.net /forums/archive.php/mars-at-12-30-am__o_t__t_51390.html (708 words)

	Communication Systems
		A reliable communications system (.pdf) for planetary exploration will need to be designed.
		Here is a an article by Michael Allison from the Goddard Institute on Space Studies on "Telling Time on Mars".
		Martian Sundial for the Mars Surveyor arriving at Mars in 2002
	aerospacescholars.jsc.nasa.gov /HAS/cirr/em/10/6.cfm (373 words)

	Ring of Martians (Site not responding. Last check: 2007-11-02)
		Wether you just feel like a Martian at times or your sites has something to do with Mars, anything goes in The Ring of the Martians.
		It's for sites of people who feel like Martians, about Mars in general, Cydonia, the Marsville project, the Pathfinder, life on Mars (or anywhere in outer space), and everyone's favorite Marvin the Martian.
		A page i made of Marvin the martian..
	p.webring.com /hub?ring=marsville (226 words)

	Main Page - NewMars
		A Warm Welcome to the New Mars Wiki!
		Instead, here you will not only find hard facts about Mars, but also various forms of fiction, poetry, philosophy and much much more.
		How to live at a Mars Analogue Research Station (External Wiki.)
	www.newmars.com /wiki/index.php/Main_Page (111 words)

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