The concept of an hour as a unit of time has its roots in ancient Egypt, around 1500 BCE, when sundials were used to divide daylight into 12 equal parts. This uneven division, which varied with the seasons, was later standardized by the Greeks and Romans. The 24-hour division we use today first appeared in the late 13th century, influenced by the development of mechanical clocks in medieval Europe.
Interestingly, despite its seemingly mundane nature, the hour is deeply intertwined with human culture and religion. For example, in Christianity, the canonical hours mark specific times of prayer throughout the day, a practice dating back to the early Middle Ages. Even today, the hour impacts how society organizes work, entertainment, and rest, shaping our daily lives in profound ways.
A minute may seem like a fleeting period, but it has remarkable significance in various fields. In music, the tempo of a piece is often defined by beats per minute (BPM), with different genres having characteristic BPMs that influence rhythm and feel. Meanwhile, in the world of science, the astronomical minute aids astronomers’ measurements, helping them ascertain the positions of celestial bodies with extraordinary precision, underscoring the minute’s pivotal role beyond daily timekeeping.
Additionally, in sports, particularly in endurance events, athletes measure their performance on how those minutes accumulate into records. A notable minute-related concept is the “four-minute mile,” which was once deemed physiologically impossible until Roger Bannister shattered the barrier in 1954. The minute isn’t just a tick of the clock; it’s a unit filled with historical, scientific, and cultural significance.
| Hours | Minutes |
|---|---|
0
h
|
0
min
|
2
h
|
120
min
|
4
h
|
240
min
|
6
h
|
360
min
|
8
h
|
480
min
|
10
h
|
600
min
|
12
h
|
720
min
|
14
h
|
840
min
|
16
h
|
960
min
|
18
h
|
1080
min
|
20
h
|
1200
min
|
22
h
|
1320
min
|
24
h
|
1440
min
|
26
h
|
1560
min
|
28
h
|
1680
min
|
30
h
|
1800
min
|
32
h
|
1920
min
|
34
h
|
2040
min
|
36
h
|
2160
min
|
38
h
|
2280
min
|
40
h
|
2400
min
|
42
h
|
2520
min
|
44
h
|
2640
min
|
46
h
|
2760
min
|
48
h
|
2880
min
|
50
h
|
3000
min
|
52
h
|
3120
min
|
54
h
|
3240
min
|
56
h
|
3360
min
|
58
h
|
3480
min
|
60
h
|
3600
min
|
62
h
|
3720
min
|
64
h
|
3840
min
|
66
h
|
3960
min
|
68
h
|
4080
min
|
70
h
|
4200
min
|
72
h
|
4320
min
|
74
h
|
4440
min
|
76
h
|
4560
min
|
78
h
|
4680
min
|
80
h
|
4800
min
|
82
h
|
4920
min
|
84
h
|
5040
min
|
86
h
|
5160
min
|
88
h
|
5280
min
|
90
h
|
5400
min
|
92
h
|
5520
min
|
94
h
|
5640
min
|
96
h
|
5760
min
|
98
h
|
5880
min
|
100
h
|
6000
min
|
102
h
|
6120
min
|
104
h
|
6240
min
|
106
h
|
6360
min
|
108
h
|
6480
min
|
110
h
|
6600
min
|
112
h
|
6720
min
|
114
h
|
6840
min
|
116
h
|
6960
min
|
118
h
|
7080
min
|
120
h
|
7200
min
|
122
h
|
7320
min
|
124
h
|
7440
min
|
126
h
|
7560
min
|
128
h
|
7680
min
|
130
h
|
7800
min
|
132
h
|
7920
min
|
134
h
|
8040
min
|
136
h
|
8160
min
|
138
h
|
8280
min
|
140
h
|
8400
min
|
142
h
|
8520
min
|
144
h
|
8640
min
|
146
h
|
8760
min
|
148
h
|
8880
min
|
150
h
|
9000
min
|
152
h
|
9120
min
|
154
h
|
9240
min
|
156
h
|
9360
min
|
158
h
|
9480
min
|
160
h
|
9600
min
|
162
h
|
9720
min
|
164
h
|
9840
min
|
166
h
|
9960
min
|
168
h
|
10080
min
|
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