![]() The first two digits from left represt hours and the last two digits represent the minutes. In 24-hour clock time, we express time in four digits. ![]() is used to express time between 12 o’clock noon to 12 o’clock midnight. is used to express time between 12 o’clock mid night to 12 o’clock noon and p.m. to represent the time of the day in 12-hour clock. These are some more examples: After midnight 00:10 a.m. Therefore, the time which is shown by the inner circle is the time before noon and that shown by the outer circle is the time after noon. Similarly, to convert the 12-hour clock time into 24-hour clock time between 12 noon and 12 midnight, we add 12.įor example, 11:30 p.m. (7:15 + 12:00)įrom the above examples, we can conclude that between 12 midnight and 12 noon the 24-hour clock time is same.įor example, 10 40 hours = 10:40 a.m., 08 20 hours = 8:20 a.m., 11 30 hours = 11:30 a.m.īut between 12 noon and 12 midnight to convert the 24-hour clock time into 12-hour clock time, we subtract 12 from the 24-hour time.įor example, 19:30 hours = 19:30 – 12:00 = 7:30 p.m. (iv) 10:25 in the evening is denoted by 22 25 hours. (iii) 6 in the morning is denoted by 06 00 hours. (i) 12 midnight is denoted by 24 00 hours or 00 00 hour. Let us understand 24-hour system by considering some examples. In a 24-hour clock system, we start counting the time from midnight. The inner circle has 1 to 12 numbers while the outer The first two digits represent hours and the last two digits represent the minutes.Ĭoncentric circles. In a 24-hour clock system, we express time in four digits. Some departments like railways, Airlines, etc use 24-hour clock system because they do not use a.m. The hour hand of the clock goes round the dial twice a day (24 hours). is to be used with it.ġ345 hours 01:45 p.m. If the numeral formed by the first two digits from the left is greater than 12, the difference between the number and 12 gives the number of hours after noon and so p.m. If the numeral formed by the first two digits from the left is less than 12, it denotes the number of hours before noon and so a.m. The numeral formed by the two digits from the right denotes the number of minutes.Ģ. In the 24-hour clock, the time from midnight to midnight is 1 day (24 hours)ġ2 hours = midday = noon 12 hours = 1200 hoursĢ p.m.
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