The Yoruba calendar (Kojoda) year starts from 3 June to 2 June of the following year. According to this calendar, the Gregorian year 2008 A. D. is the 10050th year of Yoruba culture. The traditional Yoruba week has four days. The 4 days that are dedicated to the Orisa goes as follow:
Day 1 is dedicated to Obatala (Sopanna, Iyaami, and the Egungun)
Day 2 is dedicated to Orunmila (Esu and Osun) *
Day 3 is dedicated to Ogun (Osoosi)
Day 4 is dedicated to Sango (Oya)
To reconcile with the Gregorian calendar, Yoruba people also measure time in seven days a week and four weeks a month. The four day calendar was dedicated to the Orisas and the seven day calendar is for doing business.
The seven days are: Ojo-Aiku (Sunday), Oko-Aje (Monday), Ojo-Ishegun (Tuesday), Ojo-Riru (Wednesday), Ojo-Bo/Alamisi (Thursday), Ojo-Eti (Friday) and Ojo-Abameta (Saturday).
Time is measured in isheju (minutes), wakati (hours), ojo (days), ose (weeks), oshu (months) and odun (years). There are 60 (ogota) isheju in 1 (okan) wakati; 24 (merinlelogun) wakati in 1 ojo; 7 (meje) ojo in 1 ose; 4 (merin) ose in 1 oshu and 52 (ejileladota)ose in 1 (okan) odun. There are 12 (mejila) oshu in 1 (okan) odun.
The Yoruba people (Yorùbá in Yoruba orthography) are one of the largest ethnic groups in West Africa. The majority of the Yoruba speak the Yoruba language (Yoruba: èdèe Yorùbá; èdè). The Yoruba constitute between 30 and 50 million individuals throughout West Africa and are found predominantly in Nigeria and make up around 21% of its population.
The Yoruba share borders with the Borgu (variously called "Baruba" and "Borgawa") in the northwest; the Nupe (whom they often call "Tapa") and Ebira in the north; and the Edo, the Ẹsan, and the Afemai to the southeast. The Igala and other related groups are found in the northeast, and the Egun, Fon, and others in the southwest. The Itsekiri who live in the north-west Niger delta, are closely related to the Yoruba but maintain a distinct cultural identity. While the majority of the Yoruba live in western Nigeria, there are also substantial indigenous Yoruba communities in the Republic of Benin and Togo, plus large groups of Yoruba migrants living in the United States and the United Kingdom. The Yoruba population was also involved in slavery and were taken to the Americas, where they form a large diaspora.