Way to organize and maintain certain posts sorted by date

I would like to show my posts from a certain category in tabbed sidebar.
Titles for tabs are: today | tommorow | week
Probably There is no neat way to make this to work. But how could it be done? With adding ‘category’ / ‘tag’? I would like to keep it simple and easy to maintain.

The changes at the end of these ‘periods of time’ can be done manually, but I would like to do it somehow with “bulk actions”, so that I can filter all posts for certain property (such as category or tag) like “today” and change it for “tomorrow” and not having to enter every post to change its individual properties.

It could be also done with 3 different Features Contents in Sidebars, or anything else, not just tabbed sidebar, as well as periods of time -could be anything else than today tomorrow..

maybe someone will help, sorry if question was answered