Greetings,
Landscape/page setup do not matter. Not sure if this is anywhere close to what you are asking, but if you are saying (for instance) that you want to type a date in Cell B1 and Cell D1 will update to the next day, Cell F1 the day after that and so on...
In D1 type "=B1 + 1"
In F1 type "=D1 + 1"
...and so on....
If that's way off, maybe some clarification as Jim mentioned, and/or a picture of the sheet.
Hope this helps,
Mark