hows come there isn't a metric equivalent for time?
There are exactly 86,400 standard seconds (see SI for the current definition of the standard second) in a standard day, but in the French decimal time system there are 100,000 decimal seconds in the day, so the decimal second is shorter than its counterpart.
Decimal to Standard
One decimal second is 86,400/100,000 = 0.864 standard seconds.
One decimal minute is 1,440/1,000 = 1.44 standard minutes, or 1 standard minute and 26.4 standard seconds.
One decimal hour is 24/10 = 2.4 standard hours, or 2 standard hours and 24 standard minutes.
One hundredth of a day is 14 standard minutes 24 standard seconds, or approximately 15 minutes.
Standard to Decimal
One standard second = 1.15740 decimal seconds
One standard minute = 69.44 decimal seconds (or .69 decimal minutes)
One standard hour = 4,166.67 decimal seconds (or 41 decimal minutes and 67 decimal seconds)