I took a course once in media, and the following info was shared, and since it might be helpful to you, I thought I would share. I guess if you have a cancer story, your best bet would be to share it from July to December (tongue firmly planted in cheek).
Jan-Mar Look ahead, predictions for the next year, previews
Apr-Jun Anything goes, launches, new business, leisure, vacation, balance
Jul-Sep On vacation - Reporters need "stuff," heartfelt, success stuff
Oct-Dec - Busiest time, serious or heartfelt, "Best of," "Worst of," Holidays
Holidays & Other Possibilities - Holiday Tie-ins. Everyone is on holiday, need news fillers, Super Bowl, Academy Awards, Easter, Trial Expert, Tax Day, End of School