reckoning
reck-on-ing
noun
The act of calculating or estimating something, often a quantity or time.
"By my reckoning, we'll arrive by noon."
noun
A time when one must account for past actions and face consequences.
"The day of reckoning is coming for him."
Thesaurus
Synonyms: figuring, calculation, computation, tally, counting, numeration, count, enumeration