Fun fact bonus.
The month of 5 days refes back to a time where the year consisted of 360 days. Something that can be found in records from a variety of cultures around the globe.
Double bonus. Once upon a time, there was no "Day" or "Night" to count or record "time". As difficult as that might be for some to comprehend, there is a very common scenario observed on the cosmos that provides a rational explanation as to what happened in the past, forever changing life as we know it on Earth