For some users, it may be interesting if we had the option to "auto-reset" the time selector from the Frontend after some time.

Example:
Default is set for "1 hour".
Reset is set for "1 day".
Enable/Disable option.

Usage: 
User uses the time selector and set it to "Last 7 days".
After one day, when that user access graphical information again, it will be auto reset to 1 hour.

The enable/disable option could be implemented as part of it in case some users don't want to have this option enabled at all.