Find which quarter a month belongs to and its start date.
Months group into quarters of three, so the month picks the block, and the date's position inside it counts toward progress. Quarterly targets and reviews are anchored to the quarter start, giving a clean measuring point for the period.
Quarter Start Date
Quarter = floor((month - 1) / 3) + 1; days into = date - quarter start + 1
Quarter = floor((month - 1) / 3) + 1; days into = date - quarter start + 1 Months group into quarters of three, so the month picks the block, and the date's position inside it counts toward progress.
Quarterly targets and reviews are anchored to the quarter start, giving a clean measuring point for the period.
This calculator takes 3 inputs: Year, Month, Day. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.