You have to make observation and take data on the Full moon day. If weather is not good at that that day, you can do it a day before or after. You are taking data when moon is at two different positions. One near the horizon and another high above in the sky. Ideally it is done around 6 pm when moon is rising and again 3 to 4 hours later. But it can also be done on near the midnight and another before it sets around 5 to 6 am in the morning.
Since it is date sensitive experiment, late submission for partial credit is not available.
(Important: Next lab, the lab 4 is already posted. It is because, it requires four observations a week apart each. You should take the first observation within few days after midterm. You will see Moon in the evening sky)