What does 'rigueur de jour' mean?

"Rigueur de jour" is a French term that translates to "strictness of the day" or "rigor of the day" in English. It is used to describe a high level of precision, accuracy, or strict adherence to rules or standards in a particular context or field. The term is often used in academic or professional settings to emphasize the importance of meticulousness and attention to detail in daily tasks or activities.