Calendar Problems - Beginner Level: day determination BEGINNER

Exam-focused quick revision round worksheet: 20 beginner-level calendar problems questions. Worksheet 3 of 30 targets day determination. Build proficiency in day determination, month puzzles, year logic with detailed solutions. Ideal for entry-level competitive exam preparation.

📝 Worksheet 3 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner level

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Worksheet 3 of 30 (10% complete)

Question 1

How many odd dates are there in July 2021?
July 2021 has 31 days, of which 16 are odd dates

Question 2

What day of the week was 31 December 2100 (the last day of the 21st century)?
31 December 2100 was a Friday. Note: Century years divisible by 400 are leap years, others are not.

Question 3

What day of the week was 5 September 1918?
Using Zeller's congruence: 5/9/1918 = Thursday

Question 4

How many odd dates are there in February 2024?
February 2024 has 29 days, of which 15 are odd dates

Question 5

How many days are there in October 2026?
October 2026 has 31 days.

Question 6

If today is Tuesday, what day was it 25 days ago?
Starting from Tuesday (1), before 25 days: (1 - 25) mod 7 = 4 = Friday

Question 7

In the calendar for June 2028, how many Saturdays are there? Mon Tue Wed Thu Fri Sat Sun | | | 1 | 2 | 3 | 4 5 | 6 | 7 | 8 | 9 | 10 | 11 12 | 13 | 14 | 15 | 16 | 17 | 18 19 | 20 | 21 | 22 | 23 | 24 | 25
In June 2028, the Saturdays fall on: 3, 10, 17, 24. Total: 4.

Question 8

How many even dates are there in July 2025?
July 2025 has 31 days, of which 15 are even dates

Question 9

How many days are there in September 2029?
September 2029 has 30 days.

Question 10

If the days of the week are coded as {'Monday': 'Zeta', 'Tuesday': 'Alpha', 'Wednesday': 'Gamma', 'Thursday': 'Delta', 'Friday': 'Theta', 'Saturday': 'Epsilon', 'Sunday': 'Omega'}, what is the code for Thursday?
Thursday is coded as Delta.

Question 11

Which year before 2021 had the exact same calendar as 2021?
The calendar repeats when January 1 falls on the same day and leap status matches. 2010 satisfies this.

Question 12

If January 1, 2007 was a Monday, what day was January 1, 2018?
January 1, 2018 was a Monday. Calendar patterns repeat in cycles due to leap years.

Question 13

If today is Monday, what day will it be 2 days later?
Starting from Monday (0), after 2 days: (0 + 2) mod 7 = 2 = Wednesday

Question 14

How many Tuesdays are there in August 2021?
August 2021 has 5 Tuesdays

Question 15

How many days are there between 3 May 2025 and 12 July 2025?
The difference between 3 May 2025 and 12 July 2025 is 70 days

Question 16

How many even dates are there in March 2025?
March 2025 has 31 days, of which 15 are even dates

Question 17

What is the fiscal year for the date 11-08-2021 (assuming April-March fiscal year)?
Fiscal year starts in April. Since month is 8 (August), it belongs to FY2021-2022.

Question 18

In the calendar for November 2026, how many Sundays are there? Mon Tue Wed Thu Fri Sat Sun | | | | | | 1 2 | 3 | 4 | 5 | 6 | 7 | 8 9 | 10 | 11 | 12 | 13 | 14 | 15 16 | 17 | 18 | 19 | 20 | 21 | 22 23 | 24 | 25 | 26 | 27 | 28 | 29
In November 2026, the Sundays fall on: 1, 8, 15, 22, 29. Total: 5.

Question 19

What is the date of the 1st Saturday in August 2016?
The 1st Saturday of August 2016 falls on 06-08-2016.

Question 20

What day of the week was 16 June 1978?
Using Zeller's congruence: 16/6/1978 = Friday
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