Today (on 3. February 2006) Prague citizens had a nice morning surprise - diamond dust. HOP members (Tomas Trzicky and Katerina Juzova) and others observed bright sundogs, 22 deg halo, circumzenithal arc, faint parhelic circle and very nice 120 deg parhelia (see photo by Tomas Trzicky). Halos appeared even in an internet newspapers here and a guy called to the radio: "I see rainbows!". All photos and videos are here and here.