No, I am not exactly sure what you do on Monkey Day, except consider monkeys, or maybe pick insects and bugs out of your friends hair, or maybe we could be like King Solomon, and have some shipped our way:
22 The king had a fleet of trading ships at sea along with the ships of Hiram. Once every three years it returned, carrying gold, silver and ivory, and apes and baboons.1 Kings 10:22 (New International Version, ©2010)
My guess however, is that Monkey Day is just to help remind us of monkeys, those animals who share many things with us humans, and to remember that we have been given dominion or rule over them.
26 Then God said, “Let us make mankind in our image, in our likeness, so that they may rule over the fish in the sea and the birds in the sky, over the livestock and all the wild animals, and over all the creatures that move along the ground.” Gen 1:26
And of course, any good ruler, is then, in turn a servant. Since this world is God’s and we are his followers, we should always remember to take great care and concern around his creation.
So have fun on Monkey Day, the monkey’s will!
Go throw some poo!