Calendars — Logical reasoning for kids

How to think it through

Odd days — “divide the number of days by 7; the remainder is how many weekdays to move on”

1. Days later: divide by 7 and move on by the remainder.
2. Days from 1 January: add the days of the months before (Jan 31, Feb 28 or 29, Mar 31 …), then the date − 1.
3. Leap year: divides by 4 — but a century year (1900, 2000) must divide by 400.

Use it for: Calendar questions in reasoning tests, planning birthdays and holidays.

Worked example: 1 January 2025 is a Wednesday. What day of the week is 15 March 2025? Saturday

✏️ Practice

Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.

🏁 Lesson 16 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 📅 Date Wizard badge when you pass — and a certificate when you finish all 10 lessons of Part 2 · Order and arrangement. You can still take the test without signing in.

🖨️ Calendar Reasoning Worksheet

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)