Oh fuck that again - thanks for the reminder, time to sub Interflora €50 again 
I always nearly forget because we are abroad and the UK insists on using a different day - most of the rest of the world has it in May.
I've always found it an irritating and annoying event because UK mother's day is about my mother, International Mother's day is about my MIL, but I am supposed to tell everyone I had a lovely day, in order to avoid being subject to a head tilt - because I am a mother.
Additionally where I live Father's Day is a bank holiday and fathers are expected to go and get drunk with their father friends (traditionally while on a pedal bike ride or hike) and leave the kids with their wives, but Mothers Day is a stupid Sunday and is spent fawning over your mother in law (disclaimer this year my MIL is ill and I absolutely do not begrudge her all the fawning, but it has always been this way including when I had a newborn one year).
I realised a few years ago that when I was a child Mother's day was also all about my mother, not remotely about either of my grandmothers, and now that my mother is a grandmother it is still all about her and she expects to be waited on by those of her grown up daughters who live near her and believes she is being very benevolant to grudgingly accept that they will not spend the entire day with her doing things of her choosing because their own children also want a piece of them on Mothers Day.
In both DH and my families the mothers born in the 1940s have had Mothers Day sewn up for the last 40 something years and are not letting any one else claim any of it, ever, clearly! 