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Find the calendar quarter

Choose a date to see its Q1–Q4 quarter, half-year, boundaries and position within the quarter.

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Find a calendar quarter and its boundaries

Calendar quarters divide the year into four fixed groups: January–March, April–June, July–September and October–December. Select a date to see its quarter, half-year and position within the quarter.

How to use it

  1. Choose a date; the initial value is today on your device.
  2. Read Q1–Q4 and the inclusive start and end dates.
  3. Check the day within the quarter and its total length when comparing progress between quarters.

Example

Starting point
29 February 2024, or 2024-02-29.
What to expect
Q1, H1, from 2024-01-01 to 2024-03-31. The date is day 60 of a 91-day quarter.

Before you start

  • These are calendar quarters, not an organization's fiscal quarters. A financial year starting in April needs a different mapping.
  • Quarter lengths vary with the months and leap years. The first date is day 1; do not assume every quarter has 90 days.