Residents may be interested in this, taken from the YMCA website:

Seventy-one YMCAs in England will join forces with YMCAs in 74 countries across the world on Saturday 13 October in a bid to break the world record for the largest number of people to shoot basketballs on the same day.

The YMCA World Challenge 2012 aims to gather five million people worldwide to set the new world record and at the same time highlight and celebrate the important work of the YMCA across the globe.

Invented at a YMCA in 1891, basketball is one of the most popular sports in the world and the YMCA has used it as a way to empower people and promote a healthy life style for many years.

As well as the record attempt YMCAs will be celebrating their work by staging local events including sports contests, music concerts, festivals, photo exhibitions and many other cultural activities.

The ‘Challenge’ officially starts at 8h00, local time, in New Zealand and ends in Hawaii at 17h00 following the time zone progression around the globe. The event in Cambridge will be on Parkers Piece from 12-4pm.