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

Other days

bubble bath

Bubble Bath Day
self appreciation

Self Appreciation Day
latina equal pay

Latina Equal Pay Day
promposal

Promposal Day
hoodie

Hoodie Day
boba

Boba Day
lisp

Lisp Day
law

Law Day
self care

Self Care Day
martini

Martini Day