Definition of 'reasonable times'

[Stephen T.]

I'm located in PA and I understand that the law here doesn't specifically define the term 'reasonable times' regarding entry into a tenant-occupied property (eg, with 24 hours notice to show to prospective tenants or for inspection/non-emergency repairs/maintenance. I'm interested in how other landlords define this term both in PA and elsewhere where no legal definition exists, and whether anyone has specific guidelines they follow, with specific emphasis on whether you enter during weekend hours if you have a regular 'day job' that's not RE investing. I think between 9 and 4 pm on Saturday and 1-4 on Sunday is reasonable. Do others agree?