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Notable Firsts in Timekeeping

History Of Time

A collection of questions about the origins and history of calendar systems and time measurement.

history calendar science

8 Questions Easy Ages 5+ Sep 11, 2026

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About this Study Set

This study set covers History Of Time through 8 practice questions. A collection of questions about the origins and history of calendar systems and time measurement. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Notable Firsts in Timekeeping study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which ancient civilization is credited with creating the first solar calendar consisting of 365 days?

A The Egyptians
B The Romans
C The Greeks
D The Mayans

2 In which month did the first human beings land on the moon during the Apollo 11 mission in 1969?

A May
B June
C July
D August

3 Which ruler of Rome introduced the Julian calendar, which added a leap day every four years?

A Augustus Caesar
B Julius Caesar
C Nero
D Constantine

4 The Gregorian calendar, which we use today, was introduced by Pope Gregory XIII in which century?

A 14th century
B 16th century
C 18th century
D 20th century

5 What was the first month of the original Roman calendar before it was reformed to start in January?

A March
B April
C January
D February

6 In which month did the Wright brothers achieve the first powered, sustained, and controlled airplane flight in 1903?

A October
B November
C December
D January

7 Which invention in the 17th century significantly improved the accuracy of tracking hours and minutes?

A Sundial
B Pendulum clock
C Water clock
D Hourglass

8 The first international 'Earth Day' was officially celebrated globally in which month of 1970?

A January
B April
C June
D September

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