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Questions and Answers
What is indicated by the hour hand on an analog clock?
What is indicated by the hour hand on an analog clock?
What time is it if the hour hand is on the 5 and the minute hand is on the 9?
What time is it if the hour hand is on the 5 and the minute hand is on the 9?
What is the time 30 minutes after 3:00 PM?
What is the time 30 minutes after 3:00 PM?
What is the term for the morning hours, from 12:00 to 11:59?
What is the term for the morning hours, from 12:00 to 11:59?
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On an analog clock, what is the position of the minute hand at quarter past the hour?
On an analog clock, what is the position of the minute hand at quarter past the hour?
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What is the time 12:01 AM?
What is the time 12:01 AM?
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What is the term for the afternoon and evening hours, from 12:00 to 11:59?
What is the term for the afternoon and evening hours, from 12:00 to 11:59?
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How many milliseconds are in 1 second?
How many milliseconds are in 1 second?
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How many minutes are in 1 hour?
How many minutes are in 1 hour?
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What is the 24-hour equivalent of 8:45 PM?
What is the 24-hour equivalent of 8:45 PM?
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What is the UTC offset of Eastern Standard Time (EST)?
What is the UTC offset of Eastern Standard Time (EST)?
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How many seconds are in 1 day?
How many seconds are in 1 day?
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What is the time zone identified by UTC+8?
What is the time zone identified by UTC+8?
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Study Notes
Telling Time
Analog Clocks
- An analog clock is a circular clock with hands that rotate to show the time.
- The clock has:
- Short hour hand (hour pointer)
- Long minute hand (minute pointer)
- Optional: second hand (second pointer)
Reading an Analog Clock
- Identify the hour: look at the hour hand and find the number it is closest to on the clock face.
- Identify the minutes: look at the minute hand and count the number of minutes past the hour.
- Example: hour hand on 5 and minute hand on 8, the time is 5:40.
Digital Clocks
- A digital clock displays the time in numeric format using hours and minutes.
- Example: 12:45
Telling Time to the Hour and Half Hour
- On the hour: the hour hand is on a number and the minute hand is on the 12.
- Half hour: the hour hand is on a number and the minute hand is on the 6.
Telling Time to the Quarter Hour
- Quarter past: the minute hand is on the 3.
- Quarter to: the minute hand is on the 9.
AM/PM
- AM (Ante Meridiem): morning hours, from 12:00 to 11:59.
- PM (Post Meridiem): afternoon and evening hours, from 12:00 to 11:59.
Common Time-Telling Conventions
- Midnight: 12:00 AM
- Noon: 12:00 PM
- 12:01 AM: one minute after midnight
- 11:59 PM: one minute before midnight
Telling Time
Analog Clocks
- An analog clock has three hands: short hour hand, long minute hand, and optional second hand.
Reading an Analog Clock
- Identify the hour by looking at the hour hand and finding the closest number on the clock face.
- Identify the minutes by looking at the minute hand and counting the number of minutes past the hour.
- Example: If the hour hand is on 5 and the minute hand is on 8, the time is 5:40.
Digital Clocks
- A digital clock displays the time in numeric format using hours and minutes.
- Example: 12:45 is displayed on a digital clock.
Telling Time to the Hour and Half Hour
- On the hour: the hour hand is on a number and the minute hand is on the 12.
- Half hour: the hour hand is on a number and the minute hand is on the 6.
Telling Time to the Quarter Hour
- Quarter past: the minute hand is on the 3.
- Quarter to: the minute hand is on the 9.
AM/PM
- AM (Ante Meridiem) represents morning hours, from 12:00 to 11:59.
- PM (Post Meridiem) represents afternoon and evening hours, from 12:00 to 11:59.
Common Time-Telling Conventions
- Midnight is 12:00 AM.
- Noon is 12:00 PM.
- 12:01 AM is one minute after midnight.
- 11:59 PM is one minute before midnight.
Time Conversion
Time Units
- 1 second is equal to 1000 milliseconds
- 1 minute consists of 60 seconds
- 1 hour is composed of 60 minutes, which is equivalent to 3600 seconds
- 1 day is made up of 24 hours, which is equal to 1440 minutes, or 86400 seconds
12-Hour and 24-Hour Clocks
12-Hour Clock
- Uses AM (Ante Meridiem) to denote morning hours
- Uses PM (Post Meridiem) to denote afternoon and evening hours
24-Hour Clock
- Uses a 24-hour format
- 12:00 PM is equivalent to 12:00
- 12:00 AM is equivalent to 00:00
Converting between 12-Hour and 24-Hour Clocks
- AM hours remain the same during conversion
- PM hours require adding 12 to the hour during conversion
Time Zones
Definition
- A time zone is a region that follows a uniform standard time
- Time zones are usually based on the mean solar time at a specific meridian
Time Zone Identification
- Time zones are identified by their offset from Coordinated Universal Time (UTC)
- The offset ranges from UTC-12 to UTC+12
Examples of Time Zones
- UTC-5: Eastern Standard Time (EST)
- UTC+1: Central European Time (CET)
- UTC+8: China Standard Time (CST)
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Description
Understand how to read and tell time on an analog clock with hour, minute, and second hands. Learn to identify hours and minutes on a circular clock face.
