Oops, it doesn't look like 'go by bike day' is a national day..

Other days

boba

Boba Day
reading

Reading Day
bow tie

Bow Tie Day
unicorn

Unicorn Day
cuddle up

Cuddle Up Day
one

One Day
tulip

Tulip Day
hoodie

Hoodie Day
hiv awareness

Hiv Awareness Day
bonang

Bonang Day