Elective c-section, does time of the day matter?

Hello! I am considering an elective c-section for my upcoming delivery in November and on my preferred date there is only a 5pm slot available. I could have a 2pm slot the next day and a morning slot a few days later. What are the pros and cons of morning/afternoon c-section? I was told I can eat until 6am for a 2pm slot, but am not sure until when for the 5pm slot.

Edit: I forgot to mention I am registered at a private wing in an NHS hospital.