First quarter, Q1: 1 January -- 31 March (90 days or 91 days in leap years) Second quarter, Q2: 1 April -- 30 June (91 days) Third quarter, Q3: 1 July -- 30 September (92 days) Fourth quarter, Q4: 1 October -- 31 December (92 days)
what are the four quarters of the year
First quarter, Q1: 1 January -- 31 March Second quarter, Q2: 1 April -- 30 June Third quarter, Q3: 1 July -- 30 September Fourth quarter, Q4: 1 October -- 31 December