Time-apportion
From ACT Wiki
To allocate a money amount on a time basis.
Example
Total profits of EUR 100,000
for a period of one year (365 days)
consisting of a one month (30 days) period and
an 11 months (335 days) period
would be time-apportioned as follows:
One month period:
= 100,000 x 30 / 365
= EUR 8,219
11 months period:
= 100,000 x 335 / 365
= EUR 91,781