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11. Okt. 2024 · The Mars24 software displays a Mars sunclock, a graphical representation of the planet Mars showing its current sun- and nightsides, along with a numerical readout of the "standard" Mars time as well lander and other local times.
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Mars24 Sunclock — Time on Mars Download Mars24. Mars24...
- Help
Mars24 Sunclock — Time on Mars Help Index. User's Guide;...
- Changelog
Mars24 Sunclock — Time on Mars Changelog. The current...
- Technical Notes
A Mars solar day has a mean period of 24 hours 39 minutes...
- User's Guide
Mars24 Sunclock — Time on Mars User's Guide (Updated...
- Frequently Asked Questions
Depending on where the two planets are in their orbits, this...
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Heute am Himmel: Wann und wo sind Planeten wie Saturn, Mars, Venus & helle Sterne sichtbar? Nachthimmel-Animation mit Aufgang, Untergang & Himmelsrichtung.
- Technical Notes on Mars Solar Time as Adopted by The Mars24 Sunclock
- Mars Solar Days and 24-Hr Clock Convention
- Mars Solar Seasons
- Mars Orbit Periods
- Mean and True Solar Time
- Local and "Zonal" Times
- Mars Sol Date
- Mars24 Accuracy
- Lander Mission Times
By Michael Allison and Robert Schmunk NASA Goddard Institute for Space Studies (Updated 2023-05-15) These notes provide a technical brief on the definitions of numeric read-outs in Mars24.The cited papers and further details may be found in thereferences, including journal articles byAllison (1997), Allison and McEwen (2000), and others.A less tech...
Following the long-standing practice originally adopted in 1976 by the Viking Landermissions, the daily variation of Mars solar time is reckoned in terms of a 24 Mars-hour clock,representing a 24-part division of the planet's solar day, along with the traditionalsexagesimal subdivisions of 60 minutes and 60 seconds. A Mars solar day has a meanperio...
The apparent seasonal advance of the Sun at Mars is commonly measured in terms of theareocentric longitude Ls, as referred to the planet's vernalequinox (the ascending node of the apparent seasonal motion of the Sun on the planet'sequator). As defined, Ls= 0°, 90°, 180°, and270° indicate the Mars northern hemisphere vernal equinox, summer solstice,...
The period for the repetition of the planet-centered measure of mean Solar longitude isreferred to as the tropical year. (This period is linked to the rate of advance of the"Fictitious Mean Sun," as discussed below.) The Mars tropical year is 686.9725day or 668.5921 sol. For comparison, the Mars sidereal year, as measured with respectto the fixed s...
Also as a result of a planet's orbital eccentricity, as well as its obliquity, there isa seasonally variable discrepancy between the even advance of an artificially defined MeanSolar Time and of the True Solar Time corresponding to the actual planet-centered positionof the Sun in its sky. Following the conventional usage of terrestrial timekeeping,...
The definition of the Mars prime meridian has become better refined as observations of theplanet have allowed its improvement. A small circular albedo feature observed in the 1830s byastronomers attempting to measure the planet's rotation was used in 1877 to designate Mars'sprime meridian of 0°. The location was subsequently named Sinus Meridiani (...
Numerous month-year calendars have been proposed for Mars, in the scientific literature,popular fiction, and elsewhere. Likewise, schemes for counting Mars years from one oranother epoch have appeared in the scientific literature, to varying degrees ofapprobriation. The Mars24 application does not yet employ any of these calendars orenumerations. W...
Mars24 uses the short-series representation of the seven-largest short-period planetaryperturbations of the Mars orbital longitude specified by AM2000, as adapted from Simon et al.(1994). Detailed comparisons with an accurate ephemeris suggest that the maximum error in thecalculated Ls by the adopted algorithm is 0°.008 over ±100 yearsof J2000. Acc...
Each Mars lander mission project has adopted a different reference for its solar timekeepingand mission clock. Mission dates are commonly given as a count of sols since the date on whichthe particular lander touched down on the Martian surface. Depending on mission criteria the solduring which landing occurred has been variously designated as eithe...
18. Mai 2023 · Depending on where the two planets are in their orbits, this can take 3-20 minutes, and during that time Mars will rotate from one to five degrees. Remember also that Mars24 sunclock uses stock images with enhanced and/or false color and enhanced contrast.
A convention used by spacecraft lander projects to date has been to enumerate local solar time using a 24-hour "Mars clock" on which the hours, minutes and seconds are 2.75% longer than their standard (Earth) durations.
20. Nov. 2023 · To keep track of time on the Red Planet, astronomers use a Mars clock with 24 “Mars hours” based on the planet’s rotation.
Mars is a planet with a very similar daily cycle to the Earth. Its sidereal day is 24 hours, 37 minutes and 22 seconds, and its solar day 24 hours, 39 minutes and 35 seconds. A Martian day (referred to as “sol”) is therefore approximately 40 minutes longer than a day on Earth.
