dies fastus

di·​es fas·​tus | \ ¦dēˌā|sˈfästəs\
plural dies fasti\ -​ˌstē \

Definition of dies fastus 

1 : a day on which Roman religious law permitted secular activities or an auspicious day for such activities
2 : any of the 40 days of each year on which the praetors under the Roman republic could exercise their general powers in holding court broadly : dies comitialis

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History and Etymology for dies fastus

Latin, literally, court day

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