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RASADKhONAI ISFAHON

RASADKhONAI ISFAHON, rasad­khonai azime bud, ki soli 1074 bo amri sulton Jaloluddin Malikshohi Saljuqi va vaziri u Nizomulmulk tahti rohbarii Umari Khayyom bunyod yoftaast. Dar Rasadkhonai Isfahon munajjimoni marufi on zamon Khoja Abuhotam, Muzaffar ibni Ismoili Isfizori, Ibni Najibi Vositi kor va ejod kardaand. Muhimtarin vaztfai rasadkhona tasheh va tartib dodani taqvimi navi shamsi bud, ki dar on ogozi sol Navruz boyad hamesha ba nuqtai etidoli bahori muvofiq meomad. Ba Khayyom va shogirdoni u muyassar gardid, ki dar asosi mushohidai harakati zohirii solonai Oftob chunin taqvimro tartib dihand, ki on az 15 marti 1079 ba rasmiyat daromad va dar tarikh bo nomi «Taqvimi Jaloli» mashhur gardid. Nig. Tatuvim.

Davomati sol dar «Taqvimi Jaloli» ba 365, 24242 shaboruz baro­bar bud, ki on az davomati soli tropiki (365, 2422 shaboruz) hamagi 0,0002 shaboruz beshtar astu bas va dar 4500 sol ba yak shaboruz farq mekard. Pas az kushta shudani Maslikshoh soli 1092 kori rasadkhona niz qat gardid. Nig. Ziji Malikshohi.

  1. Abdullozoda.

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SADUDDINI HAMMUI Muhammad ibni Juvayni

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