Our Holy Prophet s.a.w.w. has announced the completion of Islam 1400 years ago.
He s.a.w.w. has taught us that there are two eids for Muslims, and also taught the way of celebrating them. There is not any third eid in Islam.
Though the day 12 Rabi Ul Awwal is of very high respect, but it cannot be declared as Eid for muslims. Because the Islam has been completed by our prophet s.a.w.w. with two eids only.
The people few years back celebrated it as 12 Wafaat and now they are celebrating it as Eid. Thier concepts are shaky but remember Islam cannot changed after it’s completion.
May Allah put us all on right direction only!