I have a couple of questions: First of all, did you post this: "We know that there is a year gap between Series 2 and Series 3 and between Series 3 and Series 4. Also, between Series 4 and Series 5, three years pssed!
So, if every season lasted 1 year (like many people think), Merlin lived in Camelot for 10 years!
Now, we'll work with the time spent in each series, so we'll enstablish how many years passed between the first episode and the last episode...At the end:
- Series 1 started 20 years after the Great Purge (from February to April)
- Series 2 started some months after the end of Series 1 (from July to October/November)
- Series 3 started around 1 and a half years after the end of Series 2 (from April to October/November)
- Series 4 started 1 year after the end of Series 3 (from October 31/November 1 to May)
- Series 5 started around 3 years after the end of Series 4 (from January to May)
Thus, Merlin lived in Camelot for around 7 years and 3 months.
I hope this helped.
PS: I also calculated Merlin's, Arthur's and Morgana's birthdays and ages, I could tell you them if you are interested."? If so, would you tell Arthur, Merlin, and Morgana's birthdays?