![]() Counting chunks of time of arbitrary but uniform length (in out case, 1027491 microseconds) is very straightforward. When you get to 60 Mars seconds, then you have one Mars minute, etc. Each such chunk is a Mars second, more or less. If you don't want to use the time information from an external RTC, then just count chunks of 1027491 microseconds in software. I don't get why try alter the speed of an RTC or Arduino clock. If you want an RTC backup, you will have to do conversion anyway. ![]() And yes, this can get complicated.)įor speed, you can replace some of the divisions by "bit shifts". (Yes, the concept of time zones applies to any planet that has day and night, not just Earth. The exact value of this number depends on which "time zone" on Mars you are using. The variable k should be set to the number of earth_seconds at 00:00:00 Mars time. If this bothers you, just add the total number of leap seconds so far - 25 or so - to your value for Unix Time. (Note: Unix Time sweeps leap seconds under the carpet. Unix time (look it up) is an example of a system that would work for this it uses 00:00:00 UTC on. This is the total number of seconds that have passed since some specified time on earth. Y = x - (x / 8) - (x / 53) + (x / 19820) įor this to work, the variable earth_seconds will need to have been calculated in some other part of the code beforehand. ![]() For example, instead of calculating thisĬode: Select all k = ? // value of earth_seconds at 00:00:00 Mars time 02&start=0įourth: If you are going for mean Mars solar time (1 Mars day = 24 h 39 min 35.244 sec Earth time = 1.027491252 Earth day = 88775.244 Earth seconds, or to put it another way, 1 Earth day = 0.973244296 Mars day), then the only "floating point" arithmetic you need is a single division (or multiplication) by a number close to 1. Third: Someone already is making (has made?) a watch to handle Mars time, albeit with imperfections. ![]() You can find them on eBay just search for "24 hour" clock (with quotes around "24 hour"). If you use one of these and slow it down for Mars time, you will then have a clock showing Mars hours, minutes, and seconds. Second: There do exist (somewhat) reasonably priced analog 24-hour clocks, for Earth time. This is what I had to do for a clock for my apartment: There are some points I would like to make:įirst: I am glad people are taking the initiative to do something instead of just wringing their hands and lamenting the lack of an existing product. This is the first piece of code I'm messing with (terribly inefficient) and start again adding 1 digit every 1027 milliseconds. I thought since you can write a delay based on milliseconds you might be able to write a digit 000,000(plus one) at a delay rate of 1027-1028 until you reach 243,935 at which point the program would return to start at 000,000. The difference in time between seconds on Mars and Earth is (Earth 1.0274912510416665 second = Mars 1 second) so my idea was to simplify the code and make the watches extremely low cost and easy to reproduce. I had hoped to stay under the pricing and complicated programming/workmanship they had to input ($50-$400 price points). or_JPL.php ).Īnd an engineering student made a digital one (. I looked around to see if anybody else had made one and it turns out a jeweler made a mechanical one for JPL (. I've been thinking about making a super simple Mars watch. Please do not discuss the concept of the autotldr bot here.I'm glad I found this forum. NOTICE: This thread is for discussing the submission topic. Post found in /r/space and /r/PerseveranceRover. Summary Source | FAQ | Feedback | Top keywords: Mars #1 Mars24 #2 time #3 showing #4 computer #5 Please send queries and bug reports about Mars24 to Dr. Mars24 requires a computer with a Java 8 runtime environment installed.Īlso on the GISS website is a 1998 science brief titled "Telling Time on Mars". The current version of Mars24 is 8.1.0 released. Other displays include a plot showing the relative orbital positions of Mars and Earth and a diagram showing the solar angle and path for a given location on Mars. 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. This is the best tl dr I could make, original reduced by 20%.
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