Mumbai, Aug. 15 -- Amitabh Bachchan marked India's 80th Independence Day with heartfelt greetings on his official blog and Instagram handle, combining a patriotic tribute with reflections on his demanding schedule for the upcoming 18th season of Kaun Banega Crorepati.

In a post titled "DAY 6745", written from his Mumbai residence Jalsa, Bachchan extended his wishes to his readers and described Independence Day as a significant moment in the nation's history.

"Diwas swatantra ka, shubh din badhai ka, Vande Mataram!!!" he wrote.

Explaining the timing of his post, Bachchan wrote, "...this should be the Blog for Aug 14, but because it is being written on Aug 15, Independence Day, so greetings abound for this sacred DAY in our lives .. the ...