Question: 1 quarter how many days?
Answer: 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)