A news broadcast in  Day 7: 8:00am-9:00am  confirms that Season 7 takes place 65 days after the events of 24: Redemption. Supposing that Inauguration Day took place on January 20th as it does in the real world, this would place Day 7 on or around March 26th.
The average GPA at George Mason University is 3.66. This makes George Mason University Strongly Competitive for GPAs. (Most schools use a weighted GPA out of 4.0, though some report an unweighted GPA. With a GPA of 3.66, George Mason University requires you to be above average in your high school class. You'll need a mix of A's and B's, with a leaning toward A's. If you took some AP or IB classes, this will help boost your weighted GPA and show your ability to take college classes.
Average ACT: 29. The average ACT score composite at George Washington University is a 29. The 25th percentile ACT score is 27, and the 75th percentile ACT score is 31. In other words, a 27 places you below average, while a 31 will move you up to above average. There's no absolute ACT requirement at George Washington University, but they really want to see at least a 27 to have a chance at being considered.