Summerfest attracts Influence between 800,000 and 900,000 people each year , promoting Cause_change_of_position_on_a_scale itself as `` The World 's Largest Music Festival '' , a title certified Check by the Guinness World Records since 1999 .

In 2010 , World Maths Day created Creating a Guinness World Record for the `` Largest Online Maths Competition '' .

Largest Human Flag of India was an event Social_event organised Arranging to form Coming_to_be the world 's largest human national flag in Chennai , Tamil Nadu , India .