Complex sentence: His 200th birth anniversary was celebrated as the "Dharmakul Vandana Mahotsav" in Ahmedabad from the 1st to the 3rd of June 2009 that was attended by an estimated 6 Lakh (or 600,000) people.
Split into simpler sentences: His 200th birth anniversary was celebrated as the "Dharmakul Vandana Mahotsav" in Ahmedabad from the 1st to the 3rd of June 2009. The event was attended by an estimated 6 Lakh (or 600,000) people.