| fortnight | 1 fn | 2 fn | 3 fn | 4 fn | 5 fn | 6 fn | 7 fn | 8 fn | 9 fn | 10 fn | 11 fn | 12 fn | 13 fn | 14 fn | 15 fn | 16 fn | 17 fn | 18 fn | 19 fn | 20 fn | 21 fn | 22 fn | 23 fn | 24 fn | 25 fn | 26 fn | 27 fn | 28 fn | 29 fn | 30 fn | 31 fn | 32 fn | 33 fn | 34 fn | 35 fn | 36 fn | 37 fn | 38 fn | 39 fn | 40 fn | 41 fn | 42 fn | 43 fn | 44 fn | 45 fn | 46 fn | 47 fn | 48 fn | 49 fn | 50 fn | 51 fn | 52 fn | 53 fn | 54 fn | 55 fn | 56 fn | 57 fn | 58 fn | 59 fn | 60 fn | 61 fn | 62 fn | 63 fn | 64 fn | 65 fn | 66 fn | 67 fn | 68 fn | 69 fn | 70 fn | 71 fn | 72 fn | 73 fn | 74 fn | 75 fn | 76 fn | 77 fn | 78 fn | 79 fn | 80 fn | 81 fn | 82 fn | 83 fn | 84 fn | 85 fn | 86 fn | 87 fn | 88 fn | 89 fn | 90 fn | 91 fn | 92 fn | 93 fn | 94 fn | 95 fn | 96 fn | 97 fn | 98 fn | 99 fn | 100 fn |
| helek | 362 880 helek | 725 760 helek | 1 088 640 helek | 1 451 520 helek | 1 814 400 helek | 2 177 280 helek | 2 540 160 helek | 2 903 040 helek | 3 265 920 helek | 3 628 800 helek | 3 991 680 helek | 4 354 560 helek | 4 717 440 helek | 5 080 320 helek | 5 443 200 helek | 5 806 080 helek | 6 168 960 helek | 6 531 840 helek | 6 894 720 helek | 7 257 600 helek | 7 620 480 helek | 7 983 360 helek | 8 346 240 helek | 8 709 120 helek | 9 072 000 helek | 9 434 880 helek | 9 797 760 helek | 10 160 640 helek | 10 523 520 helek | 10 886 400 helek | 11 249 280 helek | 11 612 160 helek | 11 975 040 helek | 12 337 920 helek | 12 700 800 helek | 13 063 680 helek | 13 426 560 helek | 13 789 440 helek | 14 152 320 helek | 14 515 200 helek | 14 878 080 helek | 15 240 960 helek | 15 603 840 helek | 15 966 720 helek | 16 329 600 helek | 16 692 480 helek | 17 055 360 helek | 17 418 240 helek | 17 781 120 helek | 18 144 000 helek | 18 506 880 helek | 18 869 760 helek | 19 232 640 helek | 19 595 520 helek | 19 958 400 helek | 20 321 280 helek | 20 684 160 helek | 21 047 040 helek | 21 409 920 helek | 21 772 800 helek | 22 135 680 helek | 22 498 560 helek | 22 861 440 helek | 23 224 320 helek | 23 587 200 helek | 23 950 080 helek | 24 312 960 helek | 24 675 840 helek | 25 038 720 helek | 25 401 600 helek | 25 764 480 helek | 26 127 360 helek | 26 490 240 helek | 26 853 120 helek | 27 216 000 helek | 27 578 880 helek | 27 941 760 helek | 28 304 640 helek | 28 667 520 helek | 29 030 400 helek | 29 393 280 helek | 29 756 160 helek | 30 119 040 helek | 30 481 920 helek | 30 844 800 helek | 31 207 680 helek | 31 570 560 helek | 31 933 440 helek | 32 296 320 helek | 32 659 200 helek | 33 022 080 helek | 33 384 960 helek | 33 747 840 helek | 34 110 720 helek | 34 473 600 helek | 34 836 480 helek | 35 199 360 helek | 35 562 240 helek | 35 925 120 helek | 36 288 000 helek |
A fortnight is a unit of time equal to 14 days (2 weeks). The word derives from the Old English: fēowertyne niht, meaning "fourteen nights".
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| fortnight | fn | ≡ 2 wk | = 1.2096 Ms | Metric system SI |
| fortnights | heleks | fortnights | heleks |
|---|---|---|---|
| 1 | = 362880 | 6 | = 2177280 |
| 2 | = 725760 | 7 | = 2540160 |
| 3 | = 1088640 | 8 | = 2903040 |
| 4 | = 1451520 | 9 | = 3265920 |
| 5 | = 1814400 | 10 | = 3628800 |
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 | fortnights | heleks | fortnights |
|---|---|---|---|
| 1 | = 2.7557319223986E-6 | 6 | = 1.6534391534392E-5 |
| 2 | = 5.5114638447972E-6 | 7 | = 1.929012345679E-5 |
| 3 | = 8.2671957671958E-6 | 8 | = 2.2045855379189E-5 |
| 4 | = 1.1022927689594E-5 | 9 | = 2.4801587301587E-5 |
| 5 | = 1.3778659611993E-5 | 10 | = 2.7557319223986E-5 |
| fortnights | heleks |
|---|---|
| 1 | = 362 880 |
| 2.7557319223986 × 10-6 | = 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 …) |