I would love to find out about programming contests earlier. I missed a few other contests that I found out about only when the time period was almost over or c

I would love to find out about programming contests earlier. I missed a few other contests that I found out about only when the time period was almost over or completely finished. Anybody know a good way to stay on top of these? I'm a big fan of programming contests. They force me to stop dallying and get something done.