The 5th of May is Children’s Day （Kodomo no hi こどもの日、端午の節句）.
It is a Japanese national holiday to celebrate children’s happiness.
The day is also known as Boy’s Day while Girl’s Day is celebrated the 3rd of March.
They used to be celebrated on the 5th day of the 4th moon
in the Chinese calendar a long time ago.
On this day, families who have boys raise Koinobori (carp-shaped flags)
and display a kabuto (Japanese traditional military helmet), as symbols of strength.
They eat Kashiwa-mochi (rice cakes wrapped in kashiwa leaves) and
Chimaki (rice dumplings like Bak Chang) and celebrate children’s happiness.