If you're on the Active User Upgrade page, click 'Edit' for the first user in the list then click 'Cancel'. The date selection calendar will show on the page. You can click anywhere on the page to clear the calendar from view.
I've done 2 levels with this -- one at 10 and one at 100. Strictly speaking, it seems like the reset event fires before it actually does the reset, so I'm not sure that 10 would automatically cover it in all scenarios (all machines, phones, etc). So the 10ms delay should catch it, but there isn't really a harm to closing it again at 100ms (unless you've managed to re-open the input in a tenth of a second ).