NFL General Managers have a job that never ends. But, their focus does shift to different activities at different times during the year, as dictated by the NFL's calendar. At PowerHouseGM.com, we keep an up-to-date calendar of the NFL's business schedule, not just the schedule for games. We updated that calendar today with key dates through July, and you can view it here.
The updates we just added were based on communications from the NFL, and here's the document that we used:
FOR USE AS DESIRED
2014-2015 NATIONAL FOOTBALL LEAGUE IMPORTANT DATES
– DATES SUBJECT TO CHANGE –