If that site is down then you may try www.metalshow.lv. It's website that advertises the same stuff as www.melnapiektdiena.lv does (they both belong to one person).
It doesn't support English (actually it does but this support is too poor to be normally used) but you can find gig you need by big titles (for example, Enslaved won't be translated ) and leave a comment to ask for a help. Someone will answer.
