Oops, it doesn't look like 'not international sports day' is a national day..

Other days

boyfriend

Boyfriend Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

carpenters

Carpenters Day

stress awareness

Stress Awareness Day

bow tie

Bow Tie Day

donate your hair

Donate Your Hair Day

pick me

Pick Me Day

comfy

Comfy Day

first love

First Love Day

self appreciation

Self Appreciation Day