As-salamalaikum,
If you did it yesterday like Nigeria, belated Eid Mubarak, if you are doing it today, Eid Mubarak, if you are doing it tomorrow, Eid Mubarak insha'Allah, if you are doing it Thursday (Zaytuna institute says its possible) again Eid Mubarak insha'Allah. I think that covers everyone and every possible scenario!
P.S. When the head of the body is decapitated, the Ummah will always be divided with no one to govern. Let us inshallah after Eid talk with our local masjid imam and ask them when was the last time he sat together with the imams of other masjids. They need to put their differences aside and revive this Ummah once again.