Creating posts for later posting in Instagram is a drag. Right now the options are pretty limited. You can use an app like Grum (which violates Instagram’s Terms Of Service, not a good idea). Or maybe, you can create yourself a reminder to post something and post it manually later. None of those options is very enticing.
Photographer Eric Pare shared a quick and (extremely) dirty tip on how to prepare Instagram posts and publish them later. It is still a bit manual and definitely not elegant, but it works.