Question 1
Is 2005 a leap year?
2005 is not a leap year because it's not divisible by 4
Calendar Problems - Beginner-Intermediate Level: odd days BEGINNER-INTERMEDIATE
This deep dive ★ worksheet contains 20 beginner-intermediate-level calendar problems problems. Worksheet 11 of 30 focuses on odd days. Practice month puzzles, year logic, leap year calculations with our step-by-step solutions. Difficulty: building on fundamentals with moderate challenges. Recommended for developing learners.
What you'll learn in this worksheet:
- Quickly grasp month puzzles essential concepts
- Learn proven shortcuts for year logic
- Boost your deep dive ★ solving speed
- Spot leap year calculations patterns instantly
- Achieve odd days mastery in minutes
Your progress through Calendar Problems
Worksheet 11 of 30 (36% complete)
Question 2
If 18 October 2019 was a Friday, what day will 7 January 2020 be?
The gap is 81 days. 81 mod 7 = 4 days shift. Friday + 4 days = Tuesday
Question 3
In the calendar for December 2029, how many Tuesdays 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 | 30
In December 2029, the Tuesdays fall on: 4, 11, 18, 25. Total: 4.
Question 4
How many odd days are there between 1 January 1987 and 1 January 2022 (excluding the start date)?
Years from 1987 to 2021 inclusive. Total days = 12784. Odd days = 12784 mod 7 = 2
Question 5
What day of the week was 10 June 2012?
Using calendar calculation, 10 June 2012 was a Sunday.
Question 6
How many days are there between 6 September 2023 and 2 May 2025?
The difference between 6 September 2023 and 2 May 2025 is 604 days
Question 7
What day of the week was 9 November 2025?
Using calendar calculation, 9 November 2025 was a Sunday.
Question 8
In the calendar for November 2025, 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 | 30
In November 2025, the Sundays fall on: 2, 9, 16, 23, 30. Total: 5.
Question 9
How many days are there in March 2006?
March 2006 has 31 days.
Question 10
What is the date of the 1st Monday in September 2001?
The 1st Monday of September 2001 falls on 03-09-2001.
Question 11
How many odd dates are there in July 2020?
July 2020 has 31 days, of which 16 are odd dates
Question 12
What day of the week was 31 December 1900 (the last day of the 19th century)?
31 December 1900 was a Monday. Note: Century years divisible by 400 are leap years, others are not.
Question 13
A person was born on 19 September 2005. What is their age on 17 May 2028?
Born 19 September 2005, age on 17 May 2028 is 22 years
Question 14
What is the date of the 1st Thursday in August 2012?
The 1st Thursday of August 2012 falls on 02-08-2012.
Question 15
What is the date of the 4th Tuesday in March 2012?
The 4th Tuesday of March 2012 falls on 27-03-2012.
Question 16
How many days are there from the beginning of July to the end of September in 2004?
From July to September in 2004: 92 days total.
Question 17
What day of the week was 31 December 2300 (the last day of the 23rd century)?
31 December 2300 was a Monday. Note: Century years divisible by 400 are leap years, others are not.
Question 18
What is the date of the 4th Friday in August 2020?
The Fridays in August 2020 fall on: 7, 14, 21, 28. The 4th one is 28.
Question 19
If someone was born on 21 July 1996 (a Sunday), what day of the week will their birthday be in 2028?
The birthday 21 July 2028 falls on a Friday.
Question 20
How many days are there between 6 February 2020 and 16 April 2022?
The difference between 6 February 2020 and 16 April 2022 is 800 days
🎯 Stay focused! Worksheet 11 targets odd days.