I had a little fun with converting the SFTM Dates to Earth Dates. FJ calls his dates Stardates but uses an idiosyncratic conversion rate where 20 SD = 1 Earth Year. He tips you off to this early in the book by setting the Romulan Treaty and the Organian Treaty roughly 2000 SD apart. Knowing this, you can calculate the exact date of any event. The only thing lacking is the years. I am complete agnostic regarding what years they should be, so I set up my spreadsheet in such a way that you can plug in your preferred year for the Organian Treaty (Errand of Mercy), and it will calibrate all the dates to that. So here are some examples:

Recalibrated for 2208
Recalibrated for 2267
Recalibrated for 2556
I think until you let these dates sink in, it is very easy to misunderstand the SFTM. For example, I often hear people say that in FJ’s version of the TOS era there are hundreds upon hundreds of ships. When in fact 3220 (accounting for the construction of the Defiant sometime after Season 1 and before Season 3) is the final date of the era. All the later dates must be considered an alternate timeline which was not followed in the movies/TNG.
The other one is that people claim that in FJ’s view, the Federation is brand spanking new at the time of TOS. When in fact in his view it predates the Romulan War.
It must be admitted that there are also dates in the 7000s, but these are of course “out-of-character” dates (eg., 7503.04 = I drew this sheet on March 4, 1975).

Recalibrated for 2208
Recalibrated for 2267
Recalibrated for 2556
I think until you let these dates sink in, it is very easy to misunderstand the SFTM. For example, I often hear people say that in FJ’s version of the TOS era there are hundreds upon hundreds of ships. When in fact 3220 (accounting for the construction of the Defiant sometime after Season 1 and before Season 3) is the final date of the era. All the later dates must be considered an alternate timeline which was not followed in the movies/TNG.
The other one is that people claim that in FJ’s view, the Federation is brand spanking new at the time of TOS. When in fact in his view it predates the Romulan War.
It must be admitted that there are also dates in the 7000s, but these are of course “out-of-character” dates (eg., 7503.04 = I drew this sheet on March 4, 1975).