… that the moon used to be much more closer than it is now?
Yes, a billion years ago, the moon had a smaller orbit so it needed only 20 days to go around the earth and complete a month.
At that time a day only lasted 18 hours!
The moon keeps getting away, 1.6 inches each year.
The Earth’s rotation is changing too. It is getting slower extending our days.
In a distant future, a day will last 960 hours. Not bad for those who need more hours during the day.