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In many languages, there is no single word for a two-week period, and the equivalent terms "two weeks", "14 days", or "15 days" (
96:
period between a full moon and a new moon (and vice versa). This is equal to 14.07 days. It gives rise to a lunar fortnightly
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442:(seven-night), an old word for the week, was still in use in the early 19th century, to judge from
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131:, meaning "15 nights", is used. This is in keeping with the Welsh term for a week, which is
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306:". When added at the end of the word for "week" it changes the meaning to "two weeks". In
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16:
This article is about the unit of time measurement. For other uses, see
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66:" (or "fourteen days", since the Anglo-Saxons counted by nights).
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869:
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1183:
637:
574:
248:, all meaning "a grouping of 15"; there are also the terms
44:
643:
International Earth
Rotation and Reference Systems Service
530:"Do You Know How to Say Fortnight in Different Languages?"
1188:
40:
573:
456:Littmann, Mark; Fred Espenak; Ken Willcox (2008).
1314:
559:
364:is used in relation to "biweekly, two weeks".
107:
566:
552:
356:have the same meaning as "fortnight". In
165:word पक्ष "pakṣa", meaning one half of a
1097:International Commission on Stratigraphy
169:, which is between 14 and 15 solar days.
449:
23:Not to be confused with the video game
1315:
396:), Roman day for the midst of a month.
69:
547:
484:
318:) means exactly "two weeks". Also in
499:
13:
421:(5th ed.). 1964. p. 480.
338:), meaning "two weeks", is formed.
14:
1334:
817:Discrete time and continuous time
296:, that literally mean "biweekly".
742:
736:
890:History of timekeeping devices
522:
493:
478:
425:
410:
154:), meaning "15 days", is used.
39:is a unit of time equal to 14
1:
458:Totality: Eclipses of the Sun
419:The Concise Oxford Dictionary
403:
92:, which is equivalent to the
47:). The word derives from the
534:www.indifferentlanguages.com
59:
7:
837:Gravitational time dilation
673:Barycentric Coordinate Time
368:
10:
1339:
693:Geocentric Coordinate Time
678:Barycentric Dynamical Time
616:Coordinated Universal Time
487:"Synodic Month definition"
150:, the term δεκαπενθήμερο (
73:
22:
18:Fortnight (disambiguation)
15:
1247:
1138:
1105:
1079:
960:
860:
847:Time-translation symmetry
777:
751:
734:
658:International Atomic Time
608:
585:
502:"BBC Wales - Catchphrase"
326:to the word for "week",
108:Analogs and translations
32:Time period of two weeks
1107:Astronomical chronology
1080:Archaeology and geology
787:Absolute space and time
703:IERS Reference Meridian
698:International Date Line
609:International standards
500:BBC (16 October 2014).
462:Oxford University Press
322:, by adding the common
53:
1066:Weekday determination
952:Sundial markup schema
135:("eight nights"). In
74:Further information:
1087:Chronological dating
827:Theory of relativity
688:Daylight saving time
176:there are the terms
114:counting inclusively
1297:Time value of money
1092:Geologic time scale
947:History of sundials
812:Cosmological decade
764:Greenwich Mean Time
595:Orders of magnitude
485:Weisstein, Eric W.
116:) have to be used.
90:lunar synodic month
70:Astronomy and tides
1272:Mental chronometry
900:Marine chronometer
752:Obsolete standards
517:Wythnos is a week.
310:, the single-word
1310:
1309:
1120:Nuclear timescale
802:Continuous signal
471:978-0-19-953209-4
302:have a "doubling
300:Semitic languages
174:Romance languages
102:Long-period tides
98:tidal constituent
1330:
1011:Dominical letter
942:Equation of time
905:Marine sandglass
746:
740:
718:Terrestrial Time
575:Time measurement
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342:Slavic languages
121:Celtic languages
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54:fēowertīene niht
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807:Coordinate time
779:Time in physics
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86:lunar fortnight
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1292:Time metrology
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1248:Related topics
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937:Dialing scales
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769:Prime meridian
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759:Ephemeris time
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728:180th meridian
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282:bihebdomadaire
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159:Hindu calendar
155:
152:dekapenthímero
146:Similarly, in
144:
139:, the term is
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9:
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1323:Units of time
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1141:units of time
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1130:Sidereal time
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1115:Galactic year
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1071:Weekday names
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1061:Tropical year
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1026:Intercalation
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992:(lunar Hijri)
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832:Time dilation
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668:24-hour clock
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663:12-hour clock
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428:
420:
417:"Fortnight".
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359:
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350:čtrnáctidenní
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250:bisettimanale
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76:Eclipse cycle
67:
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55:
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38:
28:
27:
19:
1277:Decimal time
1198:
1006:Astronomical
885:Complication
880:Atomic clock
533:
524:
516:
509:. Retrieved
505:
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290:bisǎptǎmânal
289:
281:
273:
265:
257:
249:
241:
231:
227:quinze jours
225:
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209:
205:
197:
193:
181:
177:
151:
140:
132:
128:
111:
85:
79:
36:
34:
24:
1287:System time
1282:Metric time
1001:Solar Hijri
927:Water clock
910:Radio clock
842:Time domain
822:Proper time
708:Leap second
590:Chronometry
511:18 November
446:'s letters.
444:Jane Austen
360:, the term
354:dvoutýdenní
330:, the form
324:dual suffix
206:quinze dias
198:quinze dies
182:quince días
167:lunar month
127:, the term
57:, meaning "
49:Old English
1302:Timekeeper
1255:Chronology
1239:Millennium
1125:Precession
1031:Julian day
852:T-symmetry
713:Solar time
683:Civil time
404:References
380:Half-month
375:FFF system
348:the terms
274:bisetmanal
270:Portuguese
266:bissemanal
218:quindicina
214:Portuguese
88:is half a
1199:Fortnight
1046:Lunisolar
1036:Leap year
970:Gregorian
920:stopwatch
895:Hourglass
875:Astrarium
792:Spacetime
723:Time zone
600:Metrology
579:standards
506:BBC Wales
362:два тижні
358:Ukrainian
316:shvu′ayim
258:bisemanal
233:quinzaine
161:uses the
129:pythefnos
82:astronomy
60:fourteen
37:fortnight
1317:Category
1260:Duration
1234:Saeculum
1214:Olympiad
1056:Solstice
985:Holocene
962:Calendar
862:Horology
653:ISO 8601
648:ISO 31-1
440:se'night
436:sennight
385:Sennight
369:See also
336:usbu′ayn
294:Romanian
246:Romanian
242:chenzină
210:quinzena
194:quinzena
186:Galician
178:quincena
163:Sanskrit
26:Fortnite
1229:Century
1219:Lustrum
1149:Instant
1021:Equinox
990:Islamic
932:Sundial
797:Chronon
432:Senight
332:أسبوعين
312:שבועיים
278:Catalan
262:Spanish
254:Italian
222:Italian
202:Catalan
190:Spanish
133:wythnos
1224:Decade
1179:Moment
1174:Minute
1169:Second
1139:Other
996:Julian
975:Hebrew
621:offset
468:
320:Arabic
308:Hebrew
304:suffix
288:, and
286:French
240:, and
238:French
141:coicís
100:(see:
62:nights
1265:music
1204:Month
1164:Jiffy
1159:Shake
1154:Flick
1051:Solar
1041:Lunar
1016:Epact
980:Hindu
915:Watch
870:Clock
346:Czech
344:: in
328:أسبوع
184:) in
148:Greek
137:Irish
125:Welsh
123:: in
51:term
45:weeks
43:(two
1209:Year
1194:Week
1184:Hour
638:DUT1
577:and
513:2016
466:ISBN
394:idus
390:Ides
352:and
204:and
188:and
180:(or
157:The
94:mean
84:, a
41:days
1189:Day
438:or
292:in
284:in
276:in
268:in
260:in
252:in
244:in
236:in
230:or
220:in
212:in
208:or
200:in
196:or
172:In
104:).
80:In
1319::
633:ΔT
628:UT
532:.
515:.
504:.
464:.
460:.
434:,
280:,
272:,
264:,
256:,
224:,
216:,
192:,
35:A
567:e
560:t
553:v
536:.
489:.
474:.
392:(
334:(
314:(
143:.
29:.
20:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.