Glastonbury Festival has run in 1970-1971, 1978-1979, 1981-1987, 1989-1990, 1992-1995, 1997-2000, 2002-2005, 2007-2011, and 2013-17. That's 35 times in total. See the Glastonbury Festival Website History page for details. I have attended 23 of them.

1. My first was in 1984, as a punter. I went to see The Smiths.
2. In 1989 I went as part of Ariadne Productions, performing in "The Shining Ones" in the Theatre Field - booked by Arabella Churchill, Director of the Theatre/Circus zone; we also performed in the Green Fields.
3. In 1990 Arabella booked Gothic Relief and we took "The Death of Frankenstein" to the Theatre Field.
   There was no festival in 1991.
4. In 1992 I worked for Arabella as Stage Manager, 2nd Theatre Marquee
5. In 1993 I performed as Bass Singer in the Avalonian Free State Choir, at the Wise Crone Cafe.
   I was busy with finals at Dartington in 1994, and with my first summer at Tamworth in 1995.
   There was no festival in 1996.
6. In 1997 I worked for Arabella again, as Crew, on the Performer's Check-in Desk
7. In 1998 I ran the Check-In Desk
8. In 1999 I ran the Check-In Desk
9. In 2000 I ran the Check-In Desk, and part way through the week Arabella asked me to go up to Point A and 'take over'.
   There was no festival in 2001.
10. In 2002 I was 'Mr. Laminates' for the Theatre/Circus zone, running both the Check-In Desk and the Point A Passes Desk, for Bella.
11. In 2003 I was 'Mr. Laminates' again.
12. in 2004 I was 'Mr. Laminates' again.
13. In 2005 I was 'Mr. Laminates' again - see the pics of the flash-flood!
    There was no festival in 2006.
14. In 2007 I again ran the Laminating and Performer's Check-in operation.
15. In 2008 I again ran the Laminating, Wristbands and Performer's Check-in operation. This was the first Festival without Bella, following her untimely death. See my blog post at the time.
16. In 2009 I again ran the Laminating, Wristbands and Performer's Check-in operation - see the photos on Flickr.
17. In 2010 I again ran the Laminating, Wristbands and Performer's Check-in operation - now called Theatre & Circus Passes Office.
18. In 2011 I again ran the Theatre & Circus Passes Office and Performers Check-in
19. In 2013 I was restyled as the 'Accreditation Manager' - running the Theatre & Circus Passes Office and Performers Check-in as usual.
20. In 2014 I was again Accreditation Manager for Theatre & Circus and celebrated my 20th Glastonbury Festival on the 30th anniversary of my first one - with cake :-)
21. In 2015 I was again Accreditation Manager for Theatre & Circus
22. In 2016 I was again Accreditation Manager for Theatre & Circus
23. In 2017 I was again Accreditation Manager for Theatre & Circus