It was Tuesday on 12th September 2023. What will be the

Solution

Number of odd days in normal year is '1' and number of odd days in leap year are '2'. So, the number of odd days will be: From September 12, 2023 to September 12, 2024: 2 From September 12, 2024 to September 12, 2025: 1 From September 12, 2025 to September 12, 2026: 1 From September 12, 2026 to September 12, 2027: 1 From September 12, 2027 to September 12, 2028: 2 From September 12, 2028 to September 12, 2029: 1 From September 12, 2029 to September 12, 2030: 1 From September 12, 2030 to September 12, 2031: 1 So, the total number of odd days are '10'. Thus, on September 12, 2031 it will be Friday.