second | 1 s | 2 s | 3 s | 4 s | 5 s | 6 s | 7 s | 8 s | 9 s | 10 s | 11 s | 12 s | 13 s | 14 s | 15 s | 16 s | 17 s | 18 s | 19 s | 20 s | 21 s | 22 s | 23 s | 24 s | 25 s | 26 s | 27 s | 28 s | 29 s | 30 s | 31 s | 32 s | 33 s | 34 s | 35 s | 36 s | 37 s | 38 s | 39 s | 40 s | 41 s | 42 s | 43 s | 44 s | 45 s | 46 s | 47 s | 48 s | 49 s | 50 s | 51 s | 52 s | 53 s | 54 s | 55 s | 56 s | 57 s | 58 s | 59 s | 60 s | 61 s | 62 s | 63 s | 64 s | 65 s | 66 s | 67 s | 68 s | 69 s | 70 s | 71 s | 72 s | 73 s | 74 s | 75 s | 76 s | 77 s | 78 s | 79 s | 80 s | 81 s | 82 s | 83 s | 84 s | 85 s | 86 s | 87 s | 88 s | 89 s | 90 s | 91 s | 92 s | 93 s | 94 s | 95 s | 96 s | 97 s | 98 s | 99 s | 100 s |
helek | 0.3 helek | 0.6 helek | 0.9 helek | 1.2 helek | 1.5 helek | 1.8 helek | 2.1 helek | 2.4 helek | 2.7 helek | 3 helek | 3.3 helek | 3.6 helek | 3.9 helek | 4.2 helek | 4.5 helek | 4.8 helek | 5.1 helek | 5.4 helek | 5.7 helek | 6 helek | 6.3 helek | 6.6 helek | 6.9 helek | 7.2 helek | 7.5 helek | 7.8 helek | 8.1 helek | 8.4 helek | 8.7 helek | 9 helek | 9.3 helek | 9.6 helek | 9.9 helek | 10.2 helek | 10.5 helek | 10.8 helek | 11.1 helek | 11.4 helek | 11.7 helek | 12 helek | 12.3 helek | 12.6 helek | 12.9 helek | 13.2 helek | 13.5 helek | 13.8 helek | 14.1 helek | 14.4 helek | 14.7 helek | 15 helek | 15.3 helek | 15.6 helek | 15.9 helek | 16.2 helek | 16.5 helek | 16.8 helek | 17.1 helek | 17.4 helek | 17.7 helek | 18 helek | 18.3 helek | 18.6 helek | 18.9 helek | 19.2 helek | 19.5 helek | 19.8 helek | 20.1 helek | 20.4 helek | 20.7 helek | 21 helek | 21.3 helek | 21.6 helek | 21.9 helek | 22.2 helek | 22.5 helek | 22.8 helek | 23.1 helek | 23.4 helek | 23.7 helek | 24 helek | 24.3 helek | 24.6 helek | 24.9 helek | 25.2 helek | 25.5 helek | 25.8 helek | 26.1 helek | 26.4 helek | 26.7 helek | 27 helek | 27.3 helek | 27.6 helek | 27.9 helek | 28.2 helek | 28.5 helek | 28.8 helek | 29.1 helek | 29.4 helek | 29.7 helek | 30 helek |
The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units / Système International d'Unités (SI).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
second | s | time of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom at 0 K(but other seconds are sometimes used in astronomy). Also that time it takes for light to travel a distance of 299792458 metres. | ≡ 1 second | Metric system SI |
seconds | heleks | seconds | heleks |
---|---|---|---|
1 | = 0.3 | 6 | = 1.8 |
2 | = 0.6 | 7 | = 2.1 |
3 | = 0.9 | 8 | = 2.4 |
4 | = 1.2 | 9 | = 2.7 |
5 | = 1.5 | 10 | = 3 |
A helek is 3⅓ seconds or 1/18 minute.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
helek | ≡ 1⁄1080 h | = 10/3 s | Metric system SI |
heleks | seconds | heleks | seconds |
---|---|---|---|
1 | = 3.3333333333333 | 6 | = 20 |
2 | = 6.6666666666667 | 7 | = 23.333333333333 |
3 | = 10 | 8 | = 26.666666666667 |
4 | = 13.333333333333 | 9 | = 30 |
5 | = 16.666666666667 | 10 | = 33.333333333333 |
seconds | heleks |
---|---|
1 | = 0.3 |
3.3333333 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |