It is all pretty sketchy and not like years gone by where a detailed listing was available a month or so prior to the start of the TT.

There is a list of links from the Government website to other websites that list activities.

Public Transport - Bus & Rail Events: http://www.gov.im/eventsearch.gov?dept=206
Department of Education and Children events: http://www.gov.im/eventsearch.gov?dept=31
Visitisleofman.com: http://www.visitisleofman.com/whatson/events.aspx
Manx National Heritage: http://www.manxnationalheritage.im/whats-on/
Villa Gaiety: http://www.villagaiety.com
Isleofman.com: http://www.isleofman.com/events/
Isle of Man Guide: http://www.iomguide.com/events/event-list.php
Isle of Man Today: http://www.iomtoday.co.im/what-s-on
The best of the Isle of Man: https://www.thebestof.co.uk/local/the-is...man/events
Manx Radio: http://www.manxradio.com/community/
3FM:  http://www.three.fm/island-info