Is, apparently, today.
Most of these 'days' I'm sure are created by card manufacturers to flog us their product but I rather like the sound of this one.
I also like the sound of current research which says that being kind helps us to live longer.
And I like the sentiments expressed here by Edgar Guest (1881 - 1959)
We cannot say
What lips are praising us to-day.
We cannot tell
Whose prayers ask God to guard us well.
But kindness lives
Beyond the memory of him who gives.
“There is always a well-known solution to every human problem - neat, plausible, and wrong.” H.L. Mencken