A minute for time.
Calendars, clocks, and the way we divide a day.
Ten questions, with the answers explained. Try them in your head, then open each answer when you're ready.
Play this quiz →QUESTION 1 / 10
How many minutes are in three hours?
- 150
- 240
- 180
- 120
Show answer & explanation+
180
Each hour has 60 minutes, so three hours contain 180.
QUESTION 2 / 10
How many days are in a common year?
- 364
- 366
- 360
- 365
Show answer & explanation+
365
A common year has 365 days. A leap year has 366.
QUESTION 3 / 10
Which month comes immediately after September?
- October
- November
- August
- December
Show answer & explanation+
October
October follows September and comes before November.
QUESTION 4 / 10
How many months have exactly 30 days in the Gregorian calendar?
- Four
- Six
- Five
- Three
Show answer & explanation+
Four
April, June, September, and November each have 30 days.
QUESTION 5 / 10
How many years make a century?
- 100
- 50
- 10
- 1,000
Show answer & explanation+
100
A century is a period of one hundred years.
QUESTION 6 / 10
What time is 18:00 on a 12-hour clock?
- 6 p.m.
- 6 a.m.
- 8 p.m.
- 4 p.m.
Show answer & explanation+
6 p.m.
Subtract twelve from eighteen to get 6 p.m.
QUESTION 7 / 10
How many seconds are in five minutes?
- 150
- 500
- 300
- 60
Show answer & explanation+
300
Five times sixty gives three hundred seconds.
QUESTION 8 / 10
Which of these years was a leap year in the Gregorian calendar?
- 2000
- 2100
- 2200
- 1900
Show answer & explanation+
2000
Century years must be divisible by 400 to be leap years. 2000 passes that test.
QUESTION 9 / 10
What does a decade contain?
- Ten years
- One hundred years
- Fifty years
- Twelve years
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Ten years
A decade is a period of ten years.
QUESTION 10 / 10
What is midnight in 24-hour notation at the start of a day?
- 18:00
- 00:00
- 06:00
- 12:00
Show answer & explanation+
00:00
00:00 marks the start of a day. 12:00 is noon.