Marooned: Science Fiction Books on Mars has collected a bunch of free stories where Mars features prominently. Note the list is not on a page of its own. Search for "Library of Free Reads" on the page. It's a section in the sidebar.
Found a broken link? May be the story can still be found.
Trying to figure out science fiction
11:30 pm in this clock (that's 6 pm GMT).
The clock shows India time (IST). Note India doesn't have any concept of daylight saving time; so if your locale has it, the relative posting time will appear to have changed with your time change.