Coordinates in Starry Night College 7 Depend on Computer Date?

I use Starry Night College for my Intro astronomy classes and developed a lab for them to set the program to a specific date, time and location and then submit me the altitude and azimuth. This is a quick way for me to see that they have a handle on running the program. I made myself an answer key in August and have a screenshot attached. Note the altitude of Jupiter is 57 degrees and the azimuth is 113 degrees. I give this example to the students so they can verify they are doing things correctly before submitting the rest of the exercises. I have had students this semester contact me that they are unable to match my numbers. I reran the exercise myself (second screenshot) and now find that the altitude is 67 degrees and the azimuth is 135 degrees. As far as I can tell, I have the date, time and location all identical for both dates. The only difference is the day the program was run. While the alt & az would certainly change if the date in the simulation is changed, it shouldn't depend on the date the program is being run. Anyone notice anything similar? I have students running multiple systems, Mac/PC/various operating systems and most, if not all are seeing this. However, my students who did this in August/early September were matching my numbers from that date! Any ideas?