I can't stop smiling when I think about Lane's wedding — she ends up marrying Zack Van Gerbig. I've always loved their chemistry: he was goofy and devoted in a way that fit Lane's loud, secret-rockstar life. The show never hands us a precise calendar date for their nuptials; the ceremony unfolds in the later part of the original run (around Season 6), and the episode depicting it aired in the series' 2005–2006 season. So while you can place the wedding within that broadcast window, there isn't an explicit in-universe day/month that the script calls out.
What I enjoy most is how their marriage reflects Lane's growth: she embraces domestic life without losing her core identity. The revival 'A Year in the Life' confirms they stayed married and became parents, which felt true to both their characters. Honestly, learning there's no exact show-given wedding date makes it fun to imagine my own version of what that day looked like — punk-rock flowers and too-loud karaoke, and I kind of love that image.