good luck in finding the info - all I've ever found is a list of all the festas
http://www.visitmalta.com/en/what_to_see/wts_churchesfestas/wts_churchesf_festas/wts_churchesf_festas.html and click "see list of religious feasts 2005"

all I can say is that these dates are normally(always ?) for the Sunday, the last day of the feast, and most follow the same format - starting on the Tues or Wed, with nightly fireworks on the Friday onwards

Hello Sliema2
Sorry not exact answers for your questions but might help
This link is about the Mellieha village festa - is this on at the same time you will be over?
http://www.mellieha.com/vitorja/

Regarding the Zurrieq festa you could try this link for their newsletter
http://zurrieq.gov.mt/pages/main.htm

You might also enjoy this in the meantime
http://www.maltafireworks.com/

Also, spotted this on yesterday's Sunday Times - starting 11th September there will be a Culinary and Cultural festival at Ir-Razzett L-Antik in Qormi. Apparently they will be posting more details on their site at the begining of September. I have never visited there, but judging from the site it seems interesting.
http://www.farmhousecooking.com/

Hi Mark and Ingliza, thank you both for this info, I have been to Ir-Razzett L-Antik and had a very nice meal there with Mrs Sliema2 in June last year, have got some business to sort out in Qormi anyway so might kill 2 birds with 1 stone and go again to re:acquaint myself with the garlic roasted lamb with fresh mint washed down with a large bottle of Delicatta or Marsovin, and if we stopped off in Hamrun for a few pints on the way back then this would make for a very pleasant evening mmmmmmmm sounds good to me .

Regards
Sliema2