Monday all the way. Surely, they can't have issues with that coz now the Islamic month has already been established and it's not waiting for the sign of a new moon innit?
Somehow last year there was a difference of opinion for Eid-al-adha, even though Eid-al-fitr was on the same day!
This year Eid-al-fitr was on different days, so am not sure about what'll be happening now!