Personally, I could care less. https://www.merriam-webster.com/words-at-play/grammar-day-terms-that-used-to-be-considered-bad-grammar?utm_source=fark&utm_medium=website&utm_content=link&ICID=ref_fark
My pre-teen woke up this morning, walked into my room and asked "What is National Grammar Day?" I asked him why he was asking and he said when he first woke up he opened his computer to verify that today was Monday so he Googled something like, "What is today?" and it told him that.... all he wanted to know is Monday.
