{"id":1793,"date":"2026-03-09T02:36:52","date_gmt":"2026-03-08T23:36:52","guid":{"rendered":"https:\/\/www.ibrahimaybek.com\/?p=1793"},"modified":"2026-03-09T02:36:53","modified_gmt":"2026-03-08T23:36:53","slug":"imsak-ve-safak-vakitlerinin-gecmiste-hangi-acilarla-belirlendigi-uzerine-bir-arastirma","status":"publish","type":"post","link":"https:\/\/www.ibrahimaybek.com\/index.php\/2026\/03\/09\/imsak-ve-safak-vakitlerinin-gecmiste-hangi-acilarla-belirlendigi-uzerine-bir-arastirma\/","title":{"rendered":"\u0130msak ve \u015eafak vakitlerinin ge\u00e7mi\u015fte hangi a\u00e7\u0131larla belirlendi\u011fi \u00fczerine bir ara\u015ft\u0131rma"},"content":{"rendered":"\n

Ara\u015ft\u0131rmac\u0131: Mimar \u0130brahim AYBEK            Tarih:8.03.2026<\/strong><\/p>\n\n\n\n

Ara\u015ft\u0131rman\u0131n nedeni:<\/strong> G\u00fcn\u00fcm\u00fczde farkl\u0131 \u00fclkelerde farkl\u0131 imsak ve yats\u0131 namaz\u0131 hesaplamalar\u0131 g\u00f6r\u00fclmektedir. Bu konu hakk\u0131nda uluslararas\u0131 sempozyumlar d\u00fczenlenmekte ve imsak ve yats\u0131 vakitlerinin tam olarak ne zaman ger\u00e7ekle\u015ftikleri konusunda farkl\u0131 g\u00f6r\u00fc\u015fler \u00f6ne s\u00fcr\u00fclmektedir. Bu nedenle tarihin farkl\u0131 d\u00f6nemlerinde farkl\u0131 b\u00f6lgelerde yap\u0131lm\u0131\u015f usturlap disklerine bakarak, tarihteki uygulamalar hakk\u0131nda fikir edinilmesi ama\u00e7lanm\u0131\u015ft\u0131r.<\/p>\n\n\n\n

Ara\u015ft\u0131rmaya konu olan usturlaplar<\/strong><\/p>\n\n\n\n

B\u00f6lge<\/strong><\/td>Tarih<\/strong><\/td>Usta<\/strong><\/td>Fecir<\/strong><\/td>\u015eafak<\/strong><\/td><\/tr>
\u0130sfahan<\/strong><\/td>984\/5 or 1003\/4 (A.H. 374 or 394)<\/strong><\/td>A\u1e25mad and Mu\u1e25ammad<\/strong><\/td>17<\/strong>\u00ba<\/strong><\/td>18\u00ba<\/strong><\/td><\/tr>
Toledo<\/strong><\/td>1068 (A.H. 460)<\/strong><\/td>Ibrah\u012bm ibn Sa’\u012bd as-Sahl\u012b<\/strong><\/td>16\u00ba<\/strong><\/td>16\u00ba<\/strong><\/td><\/tr>
Guadaljara<\/strong><\/td>1081\/2<\/strong><\/td>Mu\u1e25ammad ibn Sa\u2018\u012bd as-\u1e62abb\u0101n<\/strong><\/td>18\u00ba<\/strong><\/td>18\u00ba<\/strong><\/td><\/tr>
Kuzey Afrika<\/strong><\/td>13.yy<\/strong><\/td>Anonim<\/strong><\/td>18\u00ba<\/strong><\/td>18\u00ba<\/strong><\/td><\/tr>
Kuzey Afrika<\/strong><\/td>16.yy<\/strong><\/td>Anonim<\/strong><\/td>19\u00ba<\/strong><\/td>18\u00ba<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Metodoloji:<\/strong><\/p>\n\n\n\n

Usturlap diskleri \u00fczerinde \u015fafak ve fecir yaylar\u0131 \u00e7izilmektedir. Bu diskler bir kay\u0131t niteli\u011finde olup belirtilen disklerin enlemleri i\u00e7in ayn\u0131 iz d\u00fc\u015f\u00fcmlerin yeniden al\u0131nmas\u0131 sonucunda \u015fafak ve fecir olarak hangi a\u00e7\u0131 de\u011ferlerini kulland\u0131\u011f\u0131 tespit edilebilmektedir. S\u00f6z konusu inceleme sonucu a\u015fa\u011f\u0131daki sonu\u00e7lar elde edilmi\u015ftir.<\/p>\n\n\n\n

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Sonu\u00e7:<\/strong> Usturlaplar\u0131n ekvator ve d\u00f6nence \u00e7izgileri hatas\u0131z \u015fekilde oturdu\u011fu i\u00e7in iz d\u00fc\u015f\u00fcmlerinde hata olmad\u0131\u011f\u0131 kesindir. Bu nedenle de \u015fafak yaylar\u0131 tam do\u011fru derecesi ile tespit edilebilmektedir.\u0130ncelenen usturlaplarda 19 derece 16 derece aras\u0131nda farkl\u0131 de\u011ferlere rastlanm\u0131\u015ft\u0131r. Y\u00fcz y\u0131llar ilerledik\u00e7e temkin s\u00fcresinin artt\u0131r\u0131ld\u0131\u011f\u0131 g\u00f6zlemlenmekle birlikte, erken d\u00f6nemlerde de 17 ve 18 derece gibi temkinli de\u011ferlerin uyguland\u0131\u011f\u0131 g\u00f6r\u00fclm\u00fc\u015ft\u00fcr.<\/p>\n\n\n\n

Kamuoyunun takdirine sunulmaktad\u0131r.<\/p>\n\n\n\n

Usturlaplar i\u00e7in Kaynak\u00e7a:<\/p>\n\n\n\n

\nhttps:\/\/www.mhs.ox.ac.uk\/astrolabe\/catalogue\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"

Ara\u015ft\u0131rmac\u0131: Mimar \u0130brahim AYBEK            Tarih:8.03.2026 Ara\u015ft\u0131rman\u0131n nedeni: G\u00fcn\u00fcm\u00fczde farkl\u0131 \u00fclkelerde farkl\u0131 imsak ve yats\u0131 namaz\u0131 hesaplamalar\u0131 g\u00f6r\u00fclmektedir. Bu konu hakk\u0131nda uluslararas\u0131 sempozyumlar d\u00fczenlenmekte ve imsak ve yats\u0131 vakitlerinin tam olarak ne zaman ger\u00e7ekle\u015ftikleri konusunda farkl\u0131 g\u00f6r\u00fc\u015fler...<\/p>\n","protected":false},"author":1,"featured_media":1798,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[142],"tags":[],"class_list":["post-1793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-usturlap"],"_links":{"self":[{"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/posts\/1793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/comments?post=1793"}],"version-history":[{"count":1,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/posts\/1793\/revisions"}],"predecessor-version":[{"id":1799,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/posts\/1793\/revisions\/1799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/media\/1798"}],"wp:attachment":[{"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/media?parent=1793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/categories?post=1793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ibrahimaybek.com\/index.php\/wp-json\/wp\/v2\/tags?post=1793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}