The official opening times for the Park are 8am to dusk, although you will often find the gates open earlier (if you want an early morning run) and some gates are left open later to allow users of the All Weather pitches and other event venues to play a bit later.
On 17th July, Wandsworth Council has arranged a day of music at the Bandstand. the day runs from 1:30 to 10:45.
Acts include
Madeline Bell, Pinise Saul
The Sugars Kings
London Horns
More details can be found here.

The Park is always popular with photographers and websites are popping up where their work can be seen, such Flickr...
On Monday 15th February the Kensington and Chelsea Council are closing Albert Bridge to motor traffic for major refurbishment. The work is expected to take 18 months, but Park users will still be able to walk across. more...