spoiler Find age of M6 bit more precisely

[Compeador 101]

So, from the beginning of Season one we knew that Nightmare Moon will return "on the longest day of the thousandth year", which is also the thousandth year of the Summer Sun Celebration, and later indicates the first celebration happened after Luna was imprisoned[1].

Now in Season 8 EP 7, the show is around the Celestia's "ones-versary", the 1111th anniversary of Sunbutt first raise the sun[2].

Here's comes something interesting,  we can know the M6's minimum possible age by some simple mathematics:

Set
Celestia first rasied the sun => a1
S8's anniversary              => a2
First Summer Sun Celebration  => b1
Nightmare Moon's return       => b2
----------------------------------
M6's minimum possible age = a2 - b2
(1) a2 - a1 = 1111
(2) b2 - b1 = 1000
(1) - (2) = (a2 - a1) - (b2 - b1) = 111
=> a2 - a1 - b2 + b1 = 111
=> a2 - b2 = 117 + a1 - b1
=> a2 - b2 = 117 - (b1 - a1)
----------------------------------
a2 - b2 < 111, if b1 > a1
a2 - b2 > 111, if b1 < a1
a2 - b2 = 111, if b1 == a1
=> M6's possible minimum age equal to 111 - (b1 - a1), or = 111 + a1 - b1
=> M6's possible minimum age equal to [111 + <The year of Celestia first raise the sun> - <The year of first Summer Sun Celebration>]
=> M6's possible minimum age equal to [111 - <The year between(Celestia first raise the sun, first Summer Sun Celebration)]

So, we get another way to figure out how old M6 is!

If (b1 == a1) that means M6 IS AT LEAST 111 YEARS OLD
Just kidding :p, since we've already know Celestia's first sunrise happened earlier than first Summer Sun Celebration so it's quite not possible.

P.S: This way seems useless unless we know the unknown number from above 

[1]: http://mlp.wikia.com/wiki/Summer_Sun_Celebration#Summer_Sun_Celebration
[2]: http://mlp.wikia.com/wiki/Horse_Play

[Brainstorm 4,114]

Never really thought of the character's age on the show.