New Delhi, Dec 12 (UNI) Megastar Amitabh Bachchan and superstar Akshay Kumar today extended birthday wishes to Tamil superstar Rajinikanth on his birthday. 'T 2469 - It is Rajinikanth's birthday on Dec 12th and we wish him greater glory happiness and good health..,' Amitabh tweeted. 'When you know you're in the Presence of Greatness!! Happy Birthday Dearest @superstarrajini Sir, the Supreme Galaxy to our SuperStars,' Akshay tweeted. UNI AR SV 1040