The year, month, and day are related to observable celestial phenomena, but the 7-day week is not.
1/7
there are 24 hours in 1 day and 7 days a week, therefore 168 hours in 1 week.
It is 7 times greater because there are 7 days in one week.
7 days in a week x 24 hours/ day gives us the number of hours in a week.
Wednesday
Oct 7 1967 was a Saturday.
December 7 1967 was a Thursday.
February 7 1967 was a Tuesday.
February 7 1967 was a Tuesday.
7 January 1967 was a Saturday.
7 September 1967 was a Thursday.
August 7 1967 was a Monday.
February 7, 1967 fell on a Tuesday.
Dec 7, 1992 fell on a Monday .
Thursday
Sunday.