But on contact, humans are extraordinarily hostile. Aliens are baffled, but perhaps you as a human can figure out the reason for hostility...
Fact sheet.First published: Nature, 20 June 2013.
Download full text from publisher's site.
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.