Almanac: Timelines and Calendars
ICSE · Class 4 · Social Science
Complete topic list for Almanac: Timelines and Calendars in ICSE Class 4 Social Science. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Almanac: Timelines and Calendars
What is a Timeline?
- A timeline is a line that shows events in the order they happened.
- Events are arranged from the earliest to the latest.
- Timelines help us understand history better by showing the sequence of events.
Special Terms for Time Periods
- 10 years = 1 decade
- 100 years = 1 century
- 1000 years = 1 millennium
Calendar and Almanac
- A calendar helps us keep track of dates, days, months, and years.
- We use calendars to mark birthdays, festivals, and school events.
- An almanac is a special calendar with extra information like moon phases, sunrise, and weather.
The Gregorian and Saka Calendars
- The Gregorian calendar is used worldwide and starts on 1 January.
- It has 365 days, and every 4 years is a leap year (366 days).
- Century years are leap years only if divisible by 400 (e.g., 2000 was leap, but 1900 was not).
Key Concepts
Central concept: Understanding Time: Timelines and Calendars
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