Oops, it doesn't look like 'records on first day' is a national day..

Other days

slime

Slime Day
tulip

Tulip Day
youth

Youth Day
get funky

Get Funky Day
singles

Singles Day
ride the wind

Ride The Wind Day
stress awareness

Stress Awareness Day
lumpy rug

Lumpy Rug Day
boba

Boba Day
ruby

Ruby Day