IDK, this one line of dialog represents more than 1500 hundred years of history:
BK613's quote from "The Squire of Gothos" doesn't show up when I quote his post, so here it is again:
(Trelane is showing off his decor)
And this, of course, is an array of your battle flags and pennants dating back to the Crusades, to Hannibal's invaders, the Grecian war galleys, and the hordes of Persia. Can't you imagine it, Captain? The thousands of men marching off to their deaths, singing beneath these banners. Doesn't it make your blood run swiftly?
(Then he goes back to his music)
http://www.chakoteya.net/StarTrek/18.htm
And here is a link to a picture of Trelane with his battle flags:
https://www.google.com/search?q=squ...AUIDigB&biw=1904&bih=921#imgrc=tqlRm0_dQknrpM:
The flags are all simple striped flags unlike the often elaborate feudal banners and standards and military colors, standards, and guidons which were carried into battle by warriors and soldiers.
The flag on the right behind Trelane is a vertical tricolor red, white and green, the same as the flag of Italy, first used by the Cisalpine Republic in 1796. Note that the flag of the kingdom of Italy from 1861-1946 had the Savoy coat of arms in the white stripe.
The next flag appears to be a vertical tricolor of red, blue, and yellow, which I haven't identified.
The next two flags appear to be vertical tricolors of blue, white and red, the same as the flag of France, used since 1794 except for 1815-1830 and briefly in 1848.
The next flag appears to be a horizontal bicolor, red above white, the same as the flags of Indonesia (official since 1949) and Monaco (since 1881).
The flag on the left appears to be a vertical tricolor, red, yellow, and green, the same as the flag of Guinea (since 1958).
Simple, plain striped flags like these are typical modern national flags of the nations that soldiers have fought for, but the actual battles flags carried into battle until about 1900 were often far more elaborate and beautiful than national flags, probably the most beautiful of all military artifacts.
Modern flags are usually rectangles, usually longer in the fly (horizontal dimension) than the hoist (vertical dimension) which are attached to cords used to hoist and lower them up and down flagpoles, or else are attached directly to lances and poles in the case of military colors, standards, and guidons.
In the time of:
Hannibal's invaders, the Grecian war galleys, and the hordes of Persia.
Modern type flags were not used in western Eurasia. Vexilloids were used for some of the purposes of modern flags. They usually consisted of a a staff with a solid object at the top, sometimes with cloth attached such as ribbons, a "windsock" like tube, or a square of cloth hanging from a horizontal cross bar. So "Hannibal's invaders, the Grecian war galleys, and the hordes of Persia" would have used vexilloids instead of flags, and "the Crusades" were the earliest events mentioned by Trelane where real flags would have been carried into battle.
So Trelane, like many
Star Trek characters, and like many users of this site, spoke with more enthusiasm than precision.
But at least his comment shows that Trelane was aware of wars more than 2,000 years before our time of AD 2019, which were thus more than 900 years plus 1,100 years before our time and thus even longer before Kirk and Jaeger's time.
Well for me I go what memory alpha says. Because it’s usually right and only lets cannon and trust me they are very they’re making sure very little non Canon is on there. Call it retcons if you want some retcons are good. Because according to memory alpha TOS was 2265-2269
And the orginal movies were 2270s-2293
TNG was 2364-2370 DS9 was 2369-2376, voyager is 2371-2378. ENT is 2150-2155 and DSC is 2256-
I searched for AD or BC, CE or BCE, at the Star Trek script search site.
TNG "The Big Goodbye":
COMPUTER: Working. Character first appeared in pulp magazine, Amazing Detective Stories, copyright 1934, AD. Second appearance in novel The Long Dark Tunnel, copyright 1936.
"The Royalle":
DATA: Fifty two stars sir. Places it between 2033 and 2079 AD. It correlates with the debris we found. Colonel S. Richey. Rest in peace, Colonel.
"Manhunt":
PICARD: Setting, San Francisco California, United States Of America. The year, 1945 A.D. The office of Dixon Hill, Private Investigator.
TOS "Requiem for Methuselah":
FLINT: In that region of earth later called Mesopotamia, in the year 3834 BC, as the millennia are reckoned. I was Akharin, a soldier, a bully and a fool. I fell in battle, pierced to the heart and did not die.
VOY "11:59":
SEVEN: The Lighthouse of Alexandria built by Ptolemy the Second in 280 BC.
These are all the Earth dates given in any series from TOS to Enterprise or movie up to Nemesis by date of production which have the year count specified. Every other date in every other
Star Trek movie or episode produced between 1964 and 2005 left the year count unspecified.
Every unspecified year might possibly be in some different year count since many have been used in Earth history. Thus the United Earth government might possibly change the official calendar and/or year count from time to time for political reasons.
And what reason would there be to imagine that different dates might be given in different calendars?
As my post number 36 on page number two says, It seems pretty obvious that the official Earth Calendar was changed from that used in the beginning of the first season of TNG to the calendar which had been used when Ralph Offenhouse was alive as mentioned in "The Neutral Zone".
After seeing what can only be interpreted as a change of calendars in the early seasons of TNG I noticed that there are examples of inconsistent dates in TOS also. Therefore characters in TOS use different Earth calendars in different episodes.
Therefore, it is impossible to be certain which Earth dates in
Star Trek are give in our calendar and which are not.