| 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 |
| decasecond | 120 960 das | 241 920 das | 362 880 das | 483 840 das | 604 800 das | 725 760 das | 846 720 das | 967 680 das | 1 088 640 das | 1 209 600 das | 1 330 560 das | 1 451 520 das | 1 572 480 das | 1 693 440 das | 1 814 400 das | 1 935 360 das | 2 056 320 das | 2 177 280 das | 2 298 240 das | 2 419 200 das | 2 540 160 das | 2 661 120 das | 2 782 080 das | 2 903 040 das | 3 024 000 das | 3 144 960 das | 3 265 920 das | 3 386 880 das | 3 507 840 das | 3 628 800 das | 3 749 760 das | 3 870 720 das | 3 991 680 das | 4 112 640 das | 4 233 600 das | 4 354 560 das | 4 475 520 das | 4 596 480 das | 4 717 440 das | 4 838 400 das | 4 959 360 das | 5 080 320 das | 5 201 280 das | 5 322 240 das | 5 443 200 das | 5 564 160 das | 5 685 120 das | 5 806 080 das | 5 927 040 das | 6 048 000 das | 6 168 960 das | 6 289 920 das | 6 410 880 das | 6 531 840 das | 6 652 800 das | 6 773 760 das | 6 894 720 das | 7 015 680 das | 7 136 640 das | 7 257 600 das | 7 378 560 das | 7 499 520 das | 7 620 480 das | 7 741 440 das | 7 862 400 das | 7 983 360 das | 8 104 320 das | 8 225 280 das | 8 346 240 das | 8 467 200 das | 8 588 160 das | 8 709 120 das | 8 830 080 das | 8 951 040 das | 9 072 000 das | 9 192 960 das | 9 313 920 das | 9 434 880 das | 9 555 840 das | 9 676 800 das | 9 797 760 das | 9 918 720 das | 10 039 680 das | 10 160 640 das | 10 281 600 das | 10 402 560 das | 10 523 520 das | 10 644 480 das | 10 765 440 das | 10 886 400 das | 11 007 360 das | 11 128 320 das | 11 249 280 das | 11 370 240 das | 11 491 200 das | 11 612 160 das | 11 733 120 das | 11 854 080 das | 11 975 040 das | 12 096 000 das |
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 | decaseconds | fortnights | decaseconds |
|---|---|---|---|
| 1 | = 120960 | 6 | = 725760 |
| 2 | = 241920 | 7 | = 846720 |
| 3 | = 362880 | 8 | = 967680 |
| 4 | = 483840 | 9 | = 1088640 |
| 5 | = 604800 | 10 | = 1209600 |
Decasecond is equal to 10second (unit of time), comes from a combination of the metric prefix deca (da) with the second (s). Plural name is decaseconds with symbol is das.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| decasecond | das | ≡ 10 second | ≡ 10 second | Metric system SI |
| decaseconds | fortnights | decaseconds | fortnights |
|---|---|---|---|
| 1 | = 8.2671957671958E-6 | 6 | = 4.9603174603175E-5 |
| 2 | = 1.6534391534392E-5 | 7 | = 5.787037037037E-5 |
| 3 | = 2.4801587301587E-5 | 8 | = 6.6137566137566E-5 |
| 4 | = 3.3068783068783E-5 | 9 | = 7.4404761904762E-5 |
| 5 | = 4.1335978835979E-5 | 10 | = 8.2671957671958E-5 |
| fortnights | decaseconds |
|---|---|
| 1 | = 120 960 |
| 8.2671957671958 × 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 …) |