Oops, it doesn't look like 'cream soda day' is a national day..

Other days

reading

Reading Day
ruby

Ruby Day
law

Law Day
raise awerness of zeus

Raise Awerness Of Zeus Day
self appreciation

Self Appreciation Day
china

China Day
bow tie

Bow Tie Day
boba

Boba Day
youth

Youth Day
fiancee

Fiancee Day