If it is Christmas, than post to twitter wishing everyone a merry Christmas!

Create custom workflows effortlessly by selecting triggers, queries, and actions. With IFTTT, it's simple: “If this” trigger happens, “then that” action follows. Streamline tasks and save time with automated workflows that work for you.
13 triggers, queries, and actions
You can add delays, queries, and more actions in the next step!
Is It Christmas? is a service that indicates whether or not it's Christmas with a simple YES or NO response.
X (Twitter) Applets can help you manage and save tweets, keep an eye on #hashtags, and much more.