If anyone can clarify, it seems different insurance companies do it differently when a 26 year old has to age out: some companies allow the 26 year old coverage until the end of the calendar year–December 31, 2024–and other companies only cover them until the end of the month of their birthday? So if they turn 26 on May 28th, for example, they are covered until May 31? And presumably, some insurance companies cut them off the day they turn 26.
And @HImom your child had always been on BCBS, so was able to get a monthly policy from BCBS until the end of the calendar year?