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

Other days

blanket fort

Blanket Fort Day
healing

Healing Day
believe

Believe Day
bow tie

Bow Tie Day
gum

Gum Day
self care

Self Care Day
special education

Special Education Day
promposal

Promposal Day
bonang

Bonang Day
law

Law Day