Minutes and seconds to fractions of an hour (or degree)

May 29, 2008
558
4
Groton, CT
Say you want to express 15 minutes and 30 seconds as a fraction of an hour.

Charles Dye already has a function @timefmt[hh:mm:ss,15] which will display that time as fractions of a day. So, if you force the hours to zero, and multiply by 24, you can get mm:ss as fractions of an hour. Or fractions of a degree of arc.

Code:
echo %@eval[%@timefmt[00:mm:ss,15]*24 =.4]
 
Jan 19, 2011
596
14
Norman, OK
Say you want to express 15 minutes and 30 seconds as a fraction of an hour.
OK, "you want to express 15 minutes and 30 seconds as a fraction of an hour."

Now what? =D
 
May 20, 2008
10,624
81
Syracuse, NY, USA
v:\> set hh=0

v:\> set mm=15

v:\> set ss=30

v:\> echo %@eval[%@makeage[1601-01-01,%hh:%mm:%ss] / (10000000*3600)]
0.2583333333
 
May 29, 2008
558
4
Groton, CT
I guess I should have finished the note.
Code:
echo %@eval[%@timefmt[00:15:30,15]*24 =.6]
0.258333