The date October 15th has now been established by many as Shwmae Sumae day, a day to encourage people to greet everyone in Welsh.
This year, Mentrau Iaith Cymru have collaborated with Mudiad Dathlu’r Gymraeg to create this handy postcard with words, phrases, and information on where to find information on learning Welsh.
Here’s how some of the Mentrau celebrated Shwmae Sumae day: