Posting for brand-new user mdonnahoo, who will answer any queries in the thread: I am writing a program to determine how much time in a flight from Point X to Point Y occurs at night for pilot logging purposes. Is there an elegant way to calculate this? [more inside]
posted by Quietgal on May 12, 2010 - 10 answers

How did people make clocks more accurate before accurate clocks? [more inside]
posted by eclecticlibrary on Jan 7, 2010 - 26 answers

How can I estimate the time that a photo was taken? [more inside]
posted by zvs on Aug 5, 2009 - 11 answers

Was the entire universe created by the Big Bang, or is the space/time generated by the Big Bang part of a larger universe? [more inside]
posted by Lownotes on Jun 23, 2009 - 23 answers

Are specific times of day ever mentioned in the Old Testament or in its apocryphal writings? [more inside]
posted by np312 on Feb 3, 2009 - 8 answers

AskMeFi Physics folk: How do astronomers account for the temporal distinctiveness of their galactic subjects in their calculations? I understand that observations of the red shift of quasars delinates a speed increase in the expansion of the universe - yet my brain explodes when I try to understand how the enormous expanse of time is factored into these models. [more inside]
posted by 0bvious on Apr 9, 2006 - 12 answers