The Luach & Events feature shows you a full Jewish calendar with Rosh Chodesh, Yomim Tovim, etc.
You can add your own events by tapping on the "+" sign, then enter in the event details, and tap on "save":
JavaScript must be enabled in order for you to use Knowledgebase Manager Pro. However, it seems JavaScript is either disabled or not supported by your browser. To use Knowledgebase Manager Pro, enable JavaScript by changing your browser options, then try again. Learn more.