How many minutes in 1000000000 seconds?
There are 60 seconds in one minute. Therefore, 1000000000 seconds is equal to 1000000000/60 = 16666666.6 recurring (that is, 16666666.6666...) minutes or 16666666 minutes 40 seconds.
How many seconds are in 2.25 minutes?
One minute is equivalent to 60 seconds.
Thus, n minutes is equivalent to n(60) seconds.
In this case, n = 2.25; thus, 2.25 minutes is equivalent to 2.25(60) seconds.
2.25(60) = 135 seconds
Thus, there are 135 seconds in 2.25 minutes.
2.25 times 60 =135 seconds
If Military time is 2100 what time is it on a regular clock?
2100 (in European or USMC time) or 2100 hours (US Army) is 9 p.m. Often the time zone is also included (2100 EST, 2100 GMT, etc), so both parties reading the communication will be clear on the actual time.
Is there a documentary on the history of the calendar especially the Gregorian calendar?
No. Although there have been a lot of documentaries on many subjects including the Mayan calendar, no one has yet made a documentary on the Gregorian calendar, one of the most used documents on the planet. Not even PBS or the History channel.