Wikipedia:Àwọn Ìṣẹ̀lẹ̀ Bíi Ọjọ́ Òní/Ọjọ́ 14 Oṣù Kẹ̀sán

• 786 – Harun al-Rashid became the Abbasid caliph upon the death of his brother al-Hadi.
• 1752 – In adopting the Gregorian calendar under the terms of the Calendar (New Style) Act 1750, the British Empire skipped eleven days (September 2 was followed directly by September 14).
• 1960 – Ní àpèjọ tó wáyé ní Baghdad, àwọn ìjọba láti Ìránì, Ìrák, Kuwait, Saudi Arabia, àti Venezuela ṣèdásílẹ̀ OPEC láti ràn wọ́n lọ́wọ́ láti ṣèparapọ̀ àti ṣàjọfọ̀nàkò àwọn èto pẹtrólẹ́ọ̀m wọn.