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.
Most of the students accepted into Mason had an SAT score in the range of 1050 to 1250, or got accepted with an ACT score in the range of 24 to 28. Based on sampled GPA data collected and applied, it is estimated that the Mason average GPA range for accepted students is around 3.35 - 3.52. Roughly 60 percent of all applicant were accepted at George Mason University, and from those that were granted acceptance about 23 percent continued on to enroll.