Earth Date to Martian Solar Longitude Conversion

The interface that does it for you

Use the following interface to compute, for a given Earth date and time, corresponding Martian date and solar longitude Ls of Mars.
Simply enter the desired Earth date and time, or click on the buttons to (re-)set these values, and then click on the "Convert Earth Date and time to Martian Date and Solar Longitude" button to obtain the corresponding Mars date (note that the Julian date corresponding to the supplied Earth date is also given on output but may not be specified as an input parameter).
See also our Mars date to Earth date converter and the page on Martian seasons and solar longitude for more information.

Earth Date and Time
Year / Month / Day
/ /
UTC Time
: :
Some shortcuts to (re-)set Date to:

Use landing dates of:

Some shortcuts to (re-)set Time to:

Earth date above corresponds to Julian Date:

Martian Year: Martian Month:
Solar longitude Ls: Sol number:


About the interface and its outputs

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