New Delhi, September 17 (PTI) Congress Vice President Rahul Gandhi today extended birthday greetings to Prime Minister Narendra Modi. Modi turned 67 today. "Best wishes to Prime Minister Narendra Modiji on his birthday. @narendramodi," Gandhi said on Twitter. Congress general secretary Digvijaya Singh also wished the prime minister on his birthday to Modi. "My best wishes to Modi ji on his birthday. May Almighty give him wisdom to admit his mistakes and correct them," he said on the micro-blogging site. Modi was born on September 17, 1950. The BJP is celebrating the day as 'sewa divas' (service day).