It's a day to celebrate every Catherine not just spelt like that.
It's August 1st and it's national Catherine day

I am going to talk to Catherine now.
by Little T. November 1, 2019
Get the Catherine Day mug.
On this day you must shower anyone by the name of Liam Catherine with 5-cent coins, preferably piffing it at his head.
Fuck it is National Liam Catherine Day
by DarthOCE November 25, 2021
Get the National Liam Catherine Day mug.