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Doesn't your camera app create folders by date? Mine does .....
Dave
This sounds like something you could make work with an automation/scheduling app like Tasker. A Google search for "rename folder with tasker" brings up many suggestions. Here's one that's similar to your requirement, except you'd need a date trigger context instead of the filename one shown: Auto Copy and Rename a File With Tasker on Android - In The Trenches
ohhh nice
what's your device and OS release version 4.1.2 ?
and camera version?