The form is a good start and a great idea.
I would like to suggest a few minor tweaks to improve the process of filling out the form.
Requiring a precise figure when none is available is a common problem with forms.
In this case, often the start and end times for a closure are unknown.
Currently we need to ‘make up something’ (lie) to complete the form.
How about using ‘radio buttons’ to select among alternatives?
Something like this:
Scheduled start of closure:
() date time
() NOW CLOSED
and
scheduled to re-open:
() date time
() UNKNOWN (short term, less than a week)
() UNKNOWN (long term, longer than a week)
The error checking for the form should only require one of the alternatives to be filled in, so if ‘NOW CLOSED’ is selected, the date and time fields should be blank.
alternatively, if the form software is not that flexible, the directions should note that
we are to to enter
00:00:00 of 1900 as the start when now closed and time of closure is unknown.
23:59:59 of 2222 as the end time when indeterminate or unknown.
Or you can pick some other uniform but arbitrary dates and times that would be a ‘flag’ so everyone would know that there is no need to lie.