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

[dcantor]

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.

echo %@eval[%@timefmt[00:mm:ss,15]*24 =.4]

 

[JohnQSmith]

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

 

[vefatica]

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

 

[dcantor]

I guess I should have finished the note.

echo %@eval[%@timefmt[00:15:30,15]*24 =.6]
0.258333