What is the reason behind having 31 days in July and August?

In 44 B.C.E. Quintilis was renamed 'Julius' (July) in honour of Julius Caesar, and in 8 B.C.E. Sextilis became 'Augustus' (August) in honour of the emperor Augustus. read more

This way, July and August became months of 31 days since 8 B.C.E. This perhaps answers the question. Of course, since a tropical year is of 365.24219 days and the average length of the Julian year was 365.25 days after absorbing a leap year once every four years it turned out to be 0.00781 day (11.2464 minutes) longer than the tropical year. read more

". The answer is because someone pretentious said so. Upon submitting the correct answer you will be awarded a point in Knowledge. Note that there are many other ways to earn Knowledge, and we wrote about them in this quick guide. read more