Quantitative Aptitude · Reasoning
Time and Clocks
562 Questions
Time and clocks problems evaluate quantitative aptitude by testing concepts on clock gains, losses, and relative speeds of hands. Questions also cover global time zones and standard time calculations. These logical reasoning topics frequently appear in SSC and banking exams.
Clock gain or lossTime zonesAngle between handsStandard time calculationPrecise time measurement
Time and Clocks Questions
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24 hours
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23 hours, 56 minutes, 4 seconds
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24 hours, 20 minutes, 59 seconds
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None of the above
B
Correct answer
Explanation
The Earth's actual rotational period (sidereal day) is 23 hours, 56 minutes, 4 seconds - the time to rotate 360 degrees relative to distant stars. The 24-hour day is the solar day (time between noons), slightly longer because Earth also orbits the Sun. Option C is the sidereal day with 1 extra rotation per year accounted for.
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23 hours, 56 minutes, 4.09 seconds
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23 hours, 58 minutes, 29.5 seconds
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23 hours, 59 minutes, 7.5 seconds
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23 hours, 59 minutes, 18 seconds
A
Correct answer
Explanation
Earth's sidereal rotation period - the time for one complete rotation relative to distant stars - is 23 hours, 56 minutes, and 4.09 seconds. This is slightly shorter than the 24-hour solar day because Earth is also orbiting the sun, so it needs to rotate a bit extra to face the sun again.
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23 hours, 56 minutes, 4.09 seconds
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23 hours, 58 minutes, 29.5 seconds
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23 hours, 59 minutes, 7.5 seconds
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23 hours, 59 minutes, 18 seconds
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Eastern Time
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Western Time
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Pacific Time
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Central Time
B
Correct answer
Explanation
The official time zones in the contiguous United States are Eastern Time, Central Time, Mountain Time, and Pacific Time. 'Western Time' is not a standard U.S. time zone designation, making it the odd one out. The other three are recognized time zones.
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Three hours
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Five and a half hours
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Seven hours
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Eight and a half hours
B
Correct answer
Explanation
IST is UTC+5:30, which is exactly 5.5 hours ahead of Greenwich Mean Time (GMT/UTC). This time offset places India in a time zone that is significantly ahead of the prime meridian.
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Three hours
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Five and a half hours
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Seven hours
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Eight and a half hours
B
Correct answer
Explanation
Indian Standard Time (IST) is UTC+5:30, meaning it is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT/UTC). India uses a single time zone across the country.
A
Correct answer
Explanation
The 10:10 position is the industry standard for watch advertisements. It creates visual symmetry, frames the brand logo nicely, and is aesthetically pleasing.
C
Correct answer
Explanation
The time is taken by the intervals between strikes. 6 strikes have 5 intervals, so each interval is 6/5 = 1.2 seconds. 11 strikes have 10 intervals. 10 intervals × 1.2 seconds = 12 seconds. 11 is a common distractor that ignores the interval logic.
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GMT + 5:30
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GMT + 4:30
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GMT + 3:30
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GMT + 2:30
A
Correct answer
Explanation
India follows Indian Standard Time (IST), which is GMT + 5:30. This means India is 5.5 hours ahead of Greenwich Mean Time. The other options are incorrect as they don't match India's official time zone.
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GMT + 5
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GMT + 9
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GMT + 7
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GMT + 3
B
Correct answer
Explanation
Japan follows Japan Standard Time (JST), which is GMT + 9 year-round. Japan does not observe daylight saving time, so the offset remains constant throughout the year. Options A, C, and D are incorrect time zone offsets for Japan.
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GMT + 1
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GMT + 2
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GMT + 3
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GMT + 4
D
Correct answer
Explanation
The UAE follows Gulf Standard Time, which is GMT + 4. This time zone is used by several Gulf countries including UAE, Oman, and Qatar. The UAE does not observe daylight saving time, so the offset remains constant.
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GMT + 3:30
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GMT + 5:30
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GMT + 7:30
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GMT + 9:30
D
Correct answer
Explanation
Australia uses multiple time zones. GMT + 9:30 represents Australian Central Standard Time (ACST), used in South Australia and the Northern Territory. Other Australian regions use GMT + 8 (AWST), GMT + 10 (AEST), and GMT + 10:30 (ACDT during daylight saving).
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GMT + 10
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GMT + 11
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GMT + 12
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GMT + 13
C
Correct answer
Explanation
New Zealand follows New Zealand Standard Time (NZST), which is GMT + 12 during standard time. During daylight saving (October to April), it uses GMT + 13. The question appears to ask about standard time, making GMT + 12 the correct answer.
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GMT - 3
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GMT - 4
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GMT - 5
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GMT - 6
C
Correct answer
Explanation
New York follows Eastern Time, which is GMT - 5 during standard time (November to March) and GMT - 4 during daylight saving time (March to November). The question appears to ask about standard time, making GMT - 5 the correct answer.
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GMT - 2
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GMT - 4
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GMT - 5
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GMT - 6