Schedules and timelines – 12-hour time

key notes :

🕒 1. Understanding 12-Hour Time Format

• The 12-hour clock divides the day into two parts:
  • AM (Ante Meridiem): Midnight to Noon (12:00 AM – 11:59 AM)
  • PM (Post Meridiem): Noon to Midnight (12:00 PM – 11:59 PM)
• 12:00 AM = Midnight
• 12:00 PM = Noon

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📅 2. Reading and Writing Time

• Time is written as hh:mm AM/PM (hours and minutes).
  • Example: 7:30 AM (morning) and 4:45 PM (afternoon/evening).
• Minutes are counted from 0 to 59.

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🛠️ 3. Converting Between 12-Hour and 24-Hour Time

• 12-hour time is common in daily life (e.g., school schedules).
• 24-hour time (military time) doesn’t use AM/PM:
  • 2:00 PM → 14:00
  • 11:45 AM → 11:45 (unchanged)

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🗓️ 4. Creating Schedules

• Timetables list events and times in sequence.
  • Example:
    • 8:00 AM – School starts
    • 10:15 AM – Break time
    • 12:30 PM – Lunch
    • 2:45 PM – School ends
• Always double-check AM/PM to avoid mistakes.

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⏳ 5. Understanding Timelines

• A timeline shows events in chronological order (time sequence).
  • Example: A daily routine timeline from 6:30 AM (wake up) to 9:00 PM (bedtime).
• Timelines use intervals — like every 30 minutes or 1 hour — to organize events.

Learn with an example