Explore the essentials of calendar questions with this quiz focused on leap years, day calculations, odd days, and weekday finding strategies. Perfect for anyone aiming to strengthen their understanding of calendar-related problem solving and patterns.
Which of the following years is a leap year according to the Gregorian calendar: 1900, 2000, 2001, or 2100?
Explanation: 2000 is a leap year because it is divisible by 400, satisfying the Gregorian leap year rule. 1900 and 2100 are not leap years, even though they are multiples of 4, because years ending with 00 must be divisible by 400. 2001 is not a leap year as it is not divisible by 4. Therefore, only 2000 qualifies among the given options.
If today is 1st March 2022 (Tuesday), what day of the week falls on 1st April 2022?
Explanation: March 2022 has 31 days, so from 1st March to 1st April is 31 days later. 31 divided by 7 gives a remainder of 3 (odd days). Adding 3 days to Tuesday lands on Friday. Wednesday and Thursday are off by one and two days respectively, while Saturday is an extra day beyond Friday.
How many odd days are there in a period of 400 years according to calendar calculations?
Explanation: In calendar calculations, 400 years have no odd days because the cumulative days are exactly divisible by 7, making the cycle repeat precisely every 400 years. Answer option 1 and 4 refer to common misconceptions about odd day computations, while 3 would be correct for some other intervals but not for 400 years. Therefore, the correct value is 0 odd days.
What day of the week was 15th August 1947 if 15th August 1948 was a Sunday?
Explanation: Since 1948 is a leap year, 15th August 1948 falls one day after the previous year's same date, unless a leap year is crossed. From 1947 to 1948, only one year is passed, and since 1948 is a leap year but August comes after February, the extra day is already included. Therefore, subtracting one day brings us to Friday. Saturday and Monday are one day off, while Thursday is a day before the correct answer.
In a non-leap year, which month always has exactly four Sundays?
Explanation: February in a non-leap year always has 28 days, which is exactly four weeks, resulting in exactly four Sundays. June, September, and April each have 30 days, which allows for the possibility of five Sundays depending on the year's starting weekday. Only February consistently fits the requirement in non-leap years.