If baby’s 1st birthday is on a weekday, would you celebrate a few days before or after?

My grandma told me it’s better to celebrate in advance (not sure why 😅) but yeah, so I arranged an advance birthday instead. But for me, I personally feel it doesn’t really matter as long as it works around the schedule for us. And agreed with the part where people don’t really care about the actual date, some don’t even know when is the actual birthdate even when I held it on actual day (and 1 year after still randomly asking oh when is baby’s birthday? lol!) 😂.