In the year 1979, Christmas day was celebrated on Tuesday. In which of the following years, it was celebrated on the same day ?

1990
1986
1985
1984

The correct answer is (a) 1990.

Christmas Day is celebrated on December 25, which is always a weekday. The weekday on which Christmas Day falls repeats in a 40-year cycle. In this cycle, Christmas Day falls on the following weekdays:

  • 32 times on Sunday
  • 24 times on Monday
  • 20 times on Tuesday
  • 19 times on Wednesday
  • 18 times on Thursday
  • 17 times on Friday
  • 16 times on Saturday

Therefore, Christmas Day was celebrated on Tuesday in 1979, 1990, 2011, and 2032.