Advanced Available Hours

I am curious if there is a way to set my hours to shift at a certain date. For example: I live on the West Coast and I currently have my availability set to my standard “West Coast Hours” calendar. I know I will be traveling in September for a few months to the East Coast, where I would like to set my availabilty to different times. However, I want my clients to be able to book with me seamlessly in advance. So, if I change my hours now, it will be on the wrong time zone for the current month. I would like to set it so that on X date my availability will shift to the correct calendar, so it automatically lets people start booking at the right times for me. Does this make sense? Changing to date-specific settings is a lot of upfront work when I just want an easy shift. Any help would be appreciated!