What is Irrecha / Irressa? Irreechaa is a mid year festival based on Oromo indigenous Astronomical Calendar. According to Prof. Asmarom Legesse, Areero Rahamata(Oromo Traditional Time Reckoner) and Laurance Doyle and the first day of Oromo calendar(Bitaa Qaraa) is determined when the appearance of star/constellation( Urjii) called Lamii(Beta Triangulum) coincide with the appearance of new moon. This happens in the month of March. Irreecha happened exactly 6 month after March when constellation "

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