Extract anomalies from two-line element set (TLE) on ISS

[fab13]

Homework Statement

I am faced to a problem of interpretation illustrated on figure below :

I must precise that I talk about **mean anomaly**.

Homework Equations

for the 2 questions, I am asked to find :

1) at which anomaly is the ISS at the two lines epoch ?

2) at wchich anomaly is the ISS on December 1st 2018 ?

The Attempt at a Solution

Fron wikipedia link : https://en.wikipedia.org/wiki/Two-line_element_set
[/B]
I think the answer to question 1) is maybe what I have extracted above (326.0288°)

But how to compute the anomaly of ISS on December 1st 2018 ?

I don't understand well this notion of meaning anomaly : could you tell me please, if you can, the concept of meaning anomaly, in a simple way ? I saw this is an angle by taking a virtual circular orbit but it causes confusions for me, I don't grasp the subtilities of this notion.

Even simple clarifications or tracks are welcome, I just want to understand better the 2 questions to be able to find an answer.

Regards

 

[Tom.G]

Try this search:
https://www.google.com/search?&q=mean+anomaly+of+orbit

The first item found is an explanation:
https://en.wikipedia.org/wiki/Mean_anomaly

Cheers,
Tom