Year
In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86,400 seconds (SI base unit), totalling exactly 31,557,600 seconds in the Julian astronomical year.
Yoruba people
Time is measured in "ìṣẹ́jú" (minutes), "wákàtí" (hours), "ọjọ́" (days), "ọ̀sẹ̀" (weeks), "oṣù" (months) and "ọdún" (years). There are 60 "ìṣẹ́jú" in 1 "wákàtí"; 24 "wákàtí" in 1 "ọjọ́"; 7 "ọjọ́" in 1 "ọ̀sẹ̀"; 4 "ọ̀sẹ̀" in 1 "oṣù" and 52 "ọ̀sẹ̀" in 1 "ọdún". There are 12 "oṣù" in 1 "ọdún".
The Yoruba week consist of five days. Of these, only four have names. Traditionally, the Yoruba count their week starting from the Ojó Ògún, this day is dedicated to Ògún. The second day is Ojó Jákúta the day is dedicated to Sàngó. The third day is known as the Ojó Òsè- this day is dedicated to Òrìshà ńlá (Obàtálá), while the fourth day is the Ojó Awo, in honour of Òrúnmìlà.
The Yoruba calendar (Kojoda) year starts from 3 June to 2 June of the following year. According to this calendar, the Gregorian year 2008 CE is the 10,050th year of Yoruba culture. To reconcile with the Gregorian calendar, Yoruba people also often measure time in seven days a week and four weeks a month: