Image after Petr Exner's Vexilologický Lexikon prapory obcí ČR (2001);
Pardubice district, Pardubice region - adopted 11 May 2001.
Jarig Bakker, 15 Nov 2003
Note that the flag of Ostretin is one of very few Czech flags where
the light blue color is explicitly noted (the other examples are flags
of Ricany and possibly of Celakovice).
Jan Zrzavy, 29 Aug 2002