Sequential weekly cell update throughout workbook

[traybrown1981]

Hello all, I am working on my yearly workbook for timesheets. We do weekly timesheets so in cells D10:L10, there is a date i.e. 1/01/2018. Every tab is labeled for the beginning of the week, 1-01, 1-08, 1-15, etc. How do I enter 1/01/2018 on tab 1-01 and then it would autofill all of the other 25ish tabs in a sequence of 7 to have the next week date updated? Sorry if this sounds confusing!! Thanks in advance for the help!