Found a broken link? May be the story can still be found.
Today, manybooks posted this online copy of Fredric Brown's novelette "Arena" (from Astounding, June 1944).
While not high on my list of great stories, it features in the original Science Fiction Hall of Fame, & also in Contento's list of Top 10 Most Reprinted Stories.
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.