No calendar API on Android?

So much is spoken about Android's "openess" versus iPhone being close, proprietrary and very bad at all. And "open" is not always the same "open" you may think of. Today I've come to surprising discovery: there is no API to access calendar in Android SDK. What? Even iOS has this (well... right, it was added in iOS 4.0). Of course you can access cloud-based Google Calendar Data. Anyway, Google is not a charity. They do want you to work in cloud and have good reason for that.