Kammala jumla mai zuwa: Zirnis ya fara bugawa kungiyar kwallon kafa ta Latvia wasa a ranar 19 ga Agusta 1997 a wasan da suka yi da Azerbaijan. A watan Nuwambar 2003 ya kasance wani ɓangare na tawagar 'yan wasan Latvia wanda ya doke Turkiyya a kan ƙafa biyu don cancanta ga UEFA Euro 2004 na karshe, a karo na farko da ya cancanci zuwa babban gasar cin kofin duniya. kuma ya taka leda a gasar zakarun Turai na Euro 2004.
karshe a shekara ta 2004. An fitar da Zirnis a wasan karshe na Baltic Cup da Lithuania a Kaunas a ranar 22 ga Mayu 2005. A ranar 17 ga Nuwamba 2007 ya zira kwallaye na kansa don baiwa Liechtenstein jagora a wasan UEFA Euro 2008 wanda Latvia ta lashe 4<unk>1. Zirnis ya buga wasanni 68 na kasa da kasa don Latvia.