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

Other days

martini

Martini Day

boba

Boba Day

offer

Offer Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

boyfriend

Boyfriend Day

coffee

Coffee Day

stress awareness

Stress Awareness Day

believe

Believe Day

camera

Camera Day

ride the wind

Ride The Wind Day