We put this question to Sahykh Muhammad ibn Saalih al-‘Uthaymeen, may Allaah preserve him, who replied as follows:
I think that this is closer to bid’ah (innovation), and it should be disallowed rather than permitted, because it is being taken as an “Eid” (regular celebration). If it happened only once, then it is OK.
Our response is: we do not allow it.
And Allaah knows best.