Baseportal DRM schedule here. Klaus Schneider's "constantly updated" DRM schedule here. Karsten Knuetter's "Always up to date DRM schedule" ishere. Scroll to the bottom of his page for the schedule and check out his great software too. For general Shortwave frequency information, try short-wave.info site or shortwaveschedule.com (which has pre-formatted DRM searches by broadcaster).
Check the map below for the Maximum Usable Frequency in your area right now.