Today is perhaps not what you think.
Today is not a day to meddle in events/ affairs you have nothing to do it. Today is not a day to send a plague upon your enemies.
Today is a day to act as your God- regardless of who that is- wants you to act. That means doing good deeds in any religion. Things like visiting the sick, donating time or money to a charity of your choice, even simply including extra folks in your prayers are all acceptable and good things to do today.
You may be even able to make this a habit to serve your God every day! How great would that be?