"Wishing my esteemed colleague & India's External Affairs Minister SushmaSwaraj ji a very Happy Birthday!," Modi tweeted.
Responding to Modi's greetings, Swaraj tweeted "Thank you Narendrabhai for your good wishes. Regards".
The External Affairs Minister also posted more thank you tweets.
"My respectful thanks to Manniya Rashtrapati ji for his greetings on my birthday. My profound regards for Advaniji for his blessings on my birthday," she said.