Mathematics & Its Pedagogy
Time — Clock & Calendar
Mathematics & Pedagogy
Paper I
6 topics
What this chapter covers
The 6 topics below make up Time — Clock & Calendar in the CTET syllabus. Open any topic for notes, solved examples and a practice MCQ test.
1Reading Clock
2Time Formats
3Units of Time
4Calendar
5Elapsed Time
6Word Problems
Study material & tests
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Concept notes, key points, solved examples and hint-guided practice for every topic.
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🎯 Topic MCQ tests
8 auto-graded CTET-style questions per topic, with full explanations.
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📝 Chapter test
25 fresh mixed-difficulty questions, timed, with solutions.
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Key Concepts — Quick Reference
This chapter
Units of time (the ladder you must know cold)
| Seconds to minute | 60 seconds = 1 minute |
|---|---|
| Minutes to hour | 60 minutes = 1 hour (so 1 hour = 3600 seconds) |
| Hours to day | 24 hours = 1 day (= 1440 minutes = 86400 seconds) |
| Days to week | 7 days = 1 week; 14 days = 1 fortnight |
| Months & years | 12 months = 1 year; 10 yrs = decade; 100 yrs = century |
Clock angles & the leap-year rule
| Minute hand | sweeps 360 deg in 60 min = 6 deg per minute |
|---|---|
| Hour hand | sweeps 360 deg in 12 hr = 30 deg per hour = 0.5 deg per minute |
| One number gap | 5 minutes = 30 deg between two clock numbers |
| Common vs leap year | 365 days = 52 weeks + 1 day; 366 days = 52 weeks + 2 days |
| Leap-year test | divisible by 4; but a century (00) year only if divisible by 400 |