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This article relies largely or entirely on a single source. (April 2013)
The Somali calendar, (Somali: Soomaali tiro ammin) which is a moon-and-sun-based system, was used by herders and farmers to determine the seasons and predict the weather. The Somali lunar calendar is known as dayax-tiriska and the sun-based calendar is called amin-tiris or shin-tiris.