It’s only 12 pages.
Select all and rotate is not going to take all that long, especially with the transform again.
The other possibility is to export the PDF and rotate the pages there.
Thanks for the quick reply. It is 10 calendars x 12 pages = 120 pages. Rotating in acrobat is going to be problematic I think, as the page size is not exactly standard either. And I need to send them to a printer to be printed. But I will check it out nonetheless.
Any printer worth using will be able to do this for you.
Actually, rotate spreads is exactly the right way to do this.
Set up a facing pages file of the correct page count (your page dimensions should be swapped from the final orientation, so if the calendar is landscape, set up portrait) . The binding will be vertical instead of horizontal at this point. Now select all the spreads in the Pages panel and choose Rotate Spread 90 degrees Clockwise. On screen your document will now appear as the calendar will be viewed and you can do your layout easily. Just keep in mind that the horizontal and vertical directions are swapped.
Is this something you are printing in house of is it being printed professionally?
You are really describing an imposition problem. You can rotate all of the spreads via the Pages panel so the spine reads horizontally the way a calendar reads—you have a cover, back cover and interior spreads—same as a regular spiral bound book except visually rotated:
The printer should be capable of imposing this document.
You can do simple imposition like this via Print Booklet in either ID or Acrobat. So in this 8 page example the cover/back cover printer spread would back up to the page 2 (photo)/page 7 (March) printer spread, spread 6/3 backs up to spread 4/5 etc.
You would then fold it as a booklet and cut at the spine for the wire-o
I think I will just select all and rotate one page at a time. I messed around a bit with master pages, creating a B master and applying it to the even number pages, but got nowhere. So I think I cannot use a B master to make things go a bit quicker.
I can give you a 'one button' solution for imposition of InDesign wall calendars, but it requires the $95 Pro Edition of IDImposer. (I am the developer). You just design your calendar as normal, right-side-up pages, in the order that the reader sees the pages, and IDImposer does the rest. An example is described here.
I'm happy to help if you run into any problems. IDImposer has a 30-day free trial period, but If you want to see sample output before you even install, I can process a calendar of yours and send you the resulting InDesign doc. You can send your doc to a secure folder of my DropBox account by clicking here: https://www.dropbox.com/request/90fCybNTHXkScMGSyWjJ