45 day termination notice excluding holidays?

[Michelle Elsaid]

Hi BP!

I have a house hacked duplex and my tenants are right at their year mark. They've decided they want to buy a duplex and asked to avoid any monthly premium while going month to month so they can keep the option open of buying. I'm totally fine with this because I will likely be their agent but also they have been great and reliable tenants that don't ask for repairs.. so I'm very open to that agreement.

I want to change lease to be 45 day notice (not the assumed 30) without penalty so they can leave anytime, EXCEPT for the holidays season where it may be harder for me to rent (Nov/Dec/Jan). Any thoughts on that? Is this legal? Are these real "holiday" months? :)

Any input would be greatly appreciated.