tiān wén > lán 
  【 zhōng wén tiáo lán
  【 wài wén tiáo】 islamiccalendar
   zhōng shì lán jiào guó jiā suǒ shǐ yòng de zhōng yòu liǎng zhǒng zuì wéi yòu míngbìng qiě zhí yán yòng zhí zhì jīn zhǒng shì hēi chī (hijra) wéi yuán de huí lìng zhǒng shì hóu (yazdegerd) wéi yuán de
   huí wéi tài yīn hēi chī de shì qiān hǎn cóng mài jiā qiān dào mài xuǎn liǎo tài yīn de shuò xiāng de tiān dìng wéi huí yuánsuǒ huí yòu jiào hǎn lín yòu chēng huí yuán wéi zhì shèng qiān yuán niánhuí yuán nián 1 yuè 1 xiāng dāng lüè gōng yuán 622 nián 7 yuè 16 huí nián wéi fēn shí 'èr yuè yuè sān shí xiǎo yuè 'èr shí jiǔ shí 'èr yuè míng shì
   yuè lán (muharram)30 tiān
   èr yuè xiǎo 'ěr (saphar)29 tiān
   sān yuè lài 'ér · áo wài (rabia-al-awwel)30 tiān
   yuè xiǎo lài 'ér · ā 'ěr (rabia-al-accher)29 tiān
   yuè zhù · áo wài (jomada-al-awwel)30 tiān
   liù yuè xiǎo zhù · ā 'ěr (jomada-al-accher)29 tiān
   yuè lài zhé (rajab)30 tiān
   yuè xiǎo shè 'ěr bāng (shaaban)29 tiān
   jiǔ yuè lài mǎi dān (ramadan)30 tiān
   shí yuè xiǎo shǎn (shawwal)29 tiān
   shí yuè 'ěr 'ěr (dulkaada)30 tiān
   shí 'èr yuè xiǎo 'ěr hēi zhé (dulheggia)29 tiān
   píng nián 354 rùn nián shí 'èr yuè jiā wéi 355 fán 30 nián yòu 11 rùn
   huí tuī yào shè a wéi huí yuán nián shù
  a=a-1﹐ a=10a+b﹐ m= yuè shù﹐ d= yuè shù biǎo xià
  ﹐
   yòu xià jiǎo q biǎo shì kuò nèi shāng shù de zhěng shù fēn
  p+m+d-2-2(a-2b) w(mod7)﹐
   shàng shì shìyòng 7 chú zuǒ biān de zǒng shù w﹐ w wéi yào míng
   yào biǎo xià
   wéi tài yáng hóu zhǐ wáng hóu sān shì dēng wáng wèi zhī nián (632 nián ) gǎi yuán cóng zhè nián hóu yuán yuán nián 1 yuè 1 xiāng dāng gōng yuán 632 nián 6 yuè 16 gōng yuán 840 nián zuǒ yòu de huā suǒ zhuàn de lìshǔ shū (al-khwrizmi'szij) juàn shǒu liǎo zhōng xiě dào : wènwèishénme shuō cóng 'ā ( àn huí ) nián yuè huà wéi shí suǒ shǔ yuè fèn jiā 30 huò 29 tiān lián tóng guò nián de shùjiǎn 3﹐ 624﹐ chú 365 ér zhōng suǒ yòng niánshì cóng hóu wáng ( sān shì ) dēng wèi shí kāi shǐ tóng huí sōu ?﹐ 624 tiānsuǒ cóng huí lěi shù jiǎn zhè shùsuǒ de shù shì cóng nián kāi shǐ de shù nián wéi 365 tiān chú 365﹐ shù shì nián shùshāng shù shì nián de nián shùwènwèishénme shuōdāng yào zhī dào nián yuè yuè shǒu yào hóu nián guò nián shùjiā sānmǎn chú zhī nián shǒu wèihé yào yóu shì nián de nián yuán dàn shì huǒ yào cóng yào suàn dào zhè tiān fán sān tiānsuǒ yào jiā sānyòu měi nián wéi 365 tiānmǎn chú zhī tiānsuǒ sān jiā suǒ guò nián shùmǎn chú zhīmìng yào suàn shàng yuè yuè shǒu de yào wènwèishénme shuōjiǎ yào zhī dào rèn yuè yuè shǒu yào nián shǒu yào jiā 'èr dàn t yóu shì nián yuè dōushì 30 tiān chú zhī 'èr yuè 35 tiān chú shì jìn chú wài ( theal-muthann'scommentaryontheastronomicaltablesofal-khwrizmi﹐ bernardr.goldstein běn﹐ 1967。 )
   shí 'èr yuè de míng chēng xià zhōng wén de míng bèi lín zhèng tuī 》。 àn zhèng tuī yuán yòng huí dàn yuè míng yòng míng
   luó wén (pahlavi) wén
   yuè nuò 'ér 'ér dīng
  (fravardino)(farwardin)
   èr yuè 'ā 'ā 'ér de shì
  (ardavahist)(ardibihischt)
   sān yuè 'ér
  (horvadad)(churdd)
   yuè 'ěr 'ěr
  (tr)(tr)
   yuè 'ā luò 'ér
  (amerdad)(murdd)
   liù yuè shā tuō luò shā liè 'ér
  (shatvair)(schahriwr)
   yuè tuō luò liè hēi 'ér
  (mitr)(mihr)
   yuè 'ā fán 'ā bān
  (vn)(bn)
   jiǔ yuè 'ā tuō luò 'ā zán 'ér
  (ter)(dhr)
   shí yuè tái nuò
  (dn)(dei)
   shí yuè màn màn
  (vohman)(bahman)]
   shí 'èr yuè bān fān 'ér de
  (spendarmad)(isfandarmadh)
   de měi míng yòu zhuān míng zhōng 1 yuè 19 2 yuè 3 ﹑ 3 yuè 6 ﹑ 4 yuè 13 ﹑ 5 yuè 7 ﹑ 6 yuè 4 ﹑ 7 yuè 16 ﹑ 8 yuè 10 ﹑ 9 yuè 9 ﹑ 10 yuè 24 ﹑ 11 yuè 2 ﹑ 12 yuè 5 shì yuè míng zuò wéi míng yuè tóng míngzài hóu yuán 375 nián gōng yuán 1006 nián shícéng měi nián duō de tiān fàng zài shí 'èr yuè
   tuī yào shè a wéi hóu yuán nián shù﹐ a=a-1﹐ m= yuè shù﹐ d=
  a+m+d+2≡ w(mod7)﹐
  w wéi yào míng
  themuslimerabeganin622withthehijrah,oremigration.muhammadandhissmallbandoffollowersleftmakkahandtraveledtomedinah.thiseventwasadoptedasthebeginningofthemuslimerainthecaliphateof'umaribnal-khattab,thesecondcaliphaftermuhammad.themuslimcalendarislunar,itsmonthsbeingdeterminedbythepositionsofthemoon.eachyearconsistsoftwelvemonths,eachmonthbeing29or30daysinlengthdependingonthepositionofthemoon.
  itisconsideredadivinecommandtousea(hijra)calendarwith12(purely)lunarmonthswithoutintercalation,asevidentfromthefollowingversesoftheholyquran(translation:a.yusufali)
  al-quran,chapter2al-baqara,verse189
  inthenameofallah,thebenevolent,themerciful
  theyasktheeconcerningthenewmoons,say:theyarebutsignstomarkfixedperiodsoftimein(theaffairsof)menandforpilgrimage.
  theislamicyearhastwelvemonthsthatarebasedonalunarcycle.allahsaysinthequran:
  al-quran,chapter9at-tauba,verse36
  inthenameofallah,thebenevolent,themerciful
  thenumberofmonthsinthesightofallahistwelve(inayear)soordainedbyhimthedayhecreatedtheheavensandtheearth;ofthemfouraresacred;thatisthestraightusage.sowrongnotyourselvesthereinandfightthepagansalltogetherastheyfightyoualltogether.butknowthatallahiswiththosewhorestrainthemselves.
  ~~~~~~~~
  al-quran,chapter10yunus,verse5
  inthenameofallah,thebenevolent,themerciful
  "itishewhomadethesuntobeashiningglory,andthemoontobealightofbeauty,andmeasuredoutstagesforit,thatyoumightknowthenumberofyearsandthecountoftime.allahdidnotcreatethisexceptintruthandrighteousness.andheexplainshissignsindetail,forthosewhounderstand"
  inhisfinalsermonbeforehisdeath,theprophetmuhammadsaid,amongotherthings,"withallahthemonthsaretwelve;fourofthemareholy;threeofthesearesuccessiveandoneoccurssinglybetweenthemonthsofjumaadaandsha'ban."
  islamicmonthsbeginatsunset,onthedaywhenthelunarcrescentisvisuallysighted.thelunaryearisapproximately354dayslong,sothemonthsrotatebackwardthroughtheseasonsandarenotfixedtothegregoriancalendar.themonthsoftheislamicyearare:
  theislamiccalendarisnamedhijricalendarandisalunarcalendar.itcontains12monthsthatarebasedonthemotionofthemoon,andbecause12lunarmonthsis12x29.53=354.36days,theislamiccalendarisconsistentlyshorter(11days)thanasolaryear,andthereforeitshiftswithrespecttothegregoriancalendar.
  theislamiccalendaristheofficialcalendarincountriesinthemiddleeastandnorthafrica,especiallysaudiarabia.butothermuslimcountriesusethegregoriancalendarforcivilpurposesandturntotheislamiccalendarforreligiouspurposes.
  whichmonthsarethereinanislamicyear?
  1.muharram7.rajab
  2.safar8.sha'ban
  3.rabi'al-awwal9.ramadan
  4.rabi'al-thani10.shawwal
  5.jumadaal-awwal11.dhual-qi'dah
  6.jumadaal-thani12.dhual-hijjah
  whatarethedayscalledinanislamicweek?
  السَّبْتas-sabt-torestالأحَدal-ahad-dayonefromthearabic'one'-wahidالإثْنَيْنal-'ithnayn-daytwofromthearabic'two'-ithnayn
  الثُّلاثَاءath-thulatha-daythreefromthearabic'three'-thalathaالأرْبِعَاءal-'arba'aa-dayfourfromthearabic'four'-arba'aaالْخَمِيسal-khamees-dayfivefromthearabic'five'-khamsah
  الْجُمْعَةal-jum'ah-dayofgathering
  currentislamicmonth
  datesinbluearefromthegregoriancalendarandtheonesinredarehijri(islamic)dates.
  currentmoonphase(live)
  currentmoonmoonphase
  howanislamicmonthdevelops
  eachmonthstartswhenthelunarcrescentisfirstseenafteranewmoon.
  althoughnewmoonsmaybecalculatedquiteprecisely,theactualvisibilityofthecrescentisdifficulttopredict.itdependsonfactorssuchasweather,theopticalpropertiesoftheatmosphere,andthelocationoftheobserver.thereforeinsomecasesitmaybedifficulttogiveaccurateinformationinadvanceaboutwhenanewmonthwillstart.
  furthermore,insomeareasmuslimsdependonalocalsightingofthemoon,whereasinotherareasauniversalsightingisaccepted.(i.e.ifanewcrescentisseenanywhereintheworlditisacceptedforcommunitiestheworldover).botharevalidislamicpractices,buttheymayleadtodifferentstartingdaysforthemonths.
  howcanwecalculatetheislamicera?
  yearsarecountedsincethehijra,thatis,prophetmohammed'smigrationtomedina,whichisassumedtohavetakenplace16julyc.e.622(juliancalendar).onthatdateah1started(ah=annohegirae=yearofthehijra).
  importantislamicdates
  importancedate
  hajj-pilgrimagetomecca1stzul-hijjah
  eid-ul-adha-feastofsacrifice10th-zul-hijjah
  hijri-islamicnewyear1stmuharram
  a'ashoora-martyrdomofimamhussein-grandsonofprophetmohammed10thmuharram
  birthdateofprophetmohammed12thrabi-al-awwal
  isra'a&mir'aj-prophetmohammedascensiontoheaven.27thrajab
  ramadan-firstdayoffasting1stramadan
  lailatulqadr-nightofpowerwhenqur'anwasrevealed.foundinoneofthefollowingnights:23rd,25th,27thor29thoframadan
  eid-ul-fitr-endoframadancelebration1stshawwal