many many happy returns of the day
It seems like you’re referring to a message or greeting where someone, likely from a platform or group called “LectureNotes,” sent a wish saying “many many happy returns of the day.” This phrase is a traditional expression used to wish someone a happy birthday or to celebrate an anniversary, implying a hope that the person gets to experience many more such happy occasions in the future.
If you need further details about the context of this message, such as its origin, usage, or cultural significance, feel free to ask!