day of reckoning Definition

1. A time when mistakes, failures, bad deeds, etc are punished.

1. Calculation or estimation.

Example: by my reckoning, we must be about eight miles from the town
Thesaurus: estimation, appraisal, calculation, evaluation, assessment, computation.
2. An account or bill.
3. A settling of accounts, debts, grievances, etc.

A time when one has to account for one's actions; a time of judgement.