| 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 |
| day | 14 d | 28 d | 42 d | 56 d | 70 d | 84 d | 98 d | 112 d | 126 d | 140 d | 154 d | 168 d | 182 d | 196 d | 210 d | 224 d | 238 d | 252 d | 266 d | 280 d | 294 d | 308 d | 322 d | 336 d | 350 d | 364 d | 378 d | 392 d | 406 d | 420 d | 434 d | 448 d | 462 d | 476 d | 490 d | 504 d | 518 d | 532 d | 546 d | 560 d | 574 d | 588 d | 602 d | 616 d | 630 d | 644 d | 658 d | 672 d | 686 d | 700 d | 714 d | 728 d | 742 d | 756 d | 770 d | 784 d | 798 d | 812 d | 826 d | 840 d | 854 d | 868 d | 882 d | 896 d | 910 d | 924 d | 938 d | 952 d | 966 d | 980 d | 994 d | 1 008 d | 1 022 d | 1 036 d | 1 050 d | 1 064 d | 1 078 d | 1 092 d | 1 106 d | 1 120 d | 1 134 d | 1 148 d | 1 162 d | 1 176 d | 1 190 d | 1 204 d | 1 218 d | 1 232 d | 1 246 d | 1 260 d | 1 274 d | 1 288 d | 1 302 d | 1 316 d | 1 330 d | 1 344 d | 1 358 d | 1 372 d | 1 386 d | 1 400 d |
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 | days | fortnights | days |
|---|---|---|---|
| 1 | = 14 | 6 | = 84 |
| 2 | = 28 | 7 | = 98 |
| 3 | = 42 | 8 | = 112 |
| 4 | = 56 | 9 | = 126 |
| 5 | = 70 | 10 | = 140 |
A day is a unit of time. In common usage, it is either an interval equal to 24 hours or daytime, the consecutive period of time during which the Sun is above the horizon.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| day | d | = 24 h = 1440 min | = 86.4 ks | Metric system SI |
| days | fortnights | days | fortnights |
|---|---|---|---|
| 1 | = 0.071428571428571 | 6 | = 0.42857142857143 |
| 2 | = 0.14285714285714 | 7 | = 0.5 |
| 3 | = 0.21428571428571 | 8 | = 0.57142857142857 |
| 4 | = 0.28571428571429 | 9 | = 0.64285714285714 |
| 5 | = 0.35714285714286 | 10 | = 0.71428571428571 |
| fortnights | days |
|---|---|
| 1 | = 14 |
| 0.0714286 | = 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 …) |