Oops, it doesn't look like 'not reply to me day' is a national day..

Other days

ruby

Ruby Day
hiv awareness

Hiv Awareness Day
tulip

Tulip Day
offer

Offer Day
ask out your crush

Ask Out Your Crush Day
healing

Healing Day
martini

Martini Day
bonang

Bonang Day
hannah

Hannah Day
boba

Boba Day