Nobeoka City (Miyazaki Prefecture, Japan)

The flag of Nobeoka city can be seen on the city website:
The page says:

Insignia of Nobeoka
(established March 28. 1934)
The outer ring is Nobeoka's 'No'
and the inner part is the 'be' in Japanese.
The symbol as a whole appears as the character for 'oka'.

Flag of Nobeoka
(established July 20. 1979)
Colors:

Background -- Purple
Insignia ---- White

Olivier Touzeau, 18 October 2005

The proportions are 100:142
Nozomi Kariyasu, 18 November 2005