I started this thread on TOS chronology. This thread is for the purpose of deducing facts about the chronology of TOS that could be deduced by a sufficiently intelligent and observant person without watching any other Star Trek productions and without using any outside reference materials such as the writer's guide, or the Star Trek Chronology: The History of the Future, etc..
A list of assumptions which are mostly not, repeat not, made,:
1) The official dates from Star Trek Chronology: The History of the Future are not used. They are official, but they are not canonical and thus they might not be correct. Since hundreds of productions have been made using the Star Trek Chronology: The History of the Future as a basis for chronology, as a general rule Star Trek productions should probably not happen too long before or after the dates that the official chronology gives, but those dates are not considered to be canon evidence or the last word. Since TOS was written decades before the official chronology was decided on, there is no reason to follow the official chronology in deciding how TOS should be dated from its own internal evidence.
2) All dates given are considered to be probably, but not certainly, dates in various Earth dating systems. It is possible that assigning dates to an extraterrestrial dating system may be necessary to solve some dating problems, so that is not arbitrarily ruled out.
3) Earth dates are not assumed to be dates in the Anno Domini dating system. Dozens or hundreds of systems of counting the years from various calendar eras have been used, and are still used, on Earth, and others might be invented in the future before the time of TOS. If someone specifies a date is AD (Anno Domini) or CE (Common Era) the dating system is thus specified. If someone doesn't specify the dating system it remains an unidentified dating system.
I believe that from time to time various pressure groups on Earth persuade the United Earth government to change the United Earth flag, and anthem, and other symbols, including changing the official calendar era of the United Earth. Thus not all Star Trek dates are given in the same calendar. Evidence for that can be seen as early as in TOS.
4) Time periods are assumed to probably, but not certainly, be Earth time periods. The possibility that characters might sometimes use other, non terrestrial, time periods should not be arbitrarily ruled out as a solution to chronological problems. For example Admiral Morrow might have been using years longer than Earth years when he said that the Enterprise was 20 years old in Star Trek III: The Search For Spock.
Note that in informal English the word day has two meanings. One is a period of light, following and followed by a period of dark called night. The other is the period of time between two immediately successive midnights at the same place on Earth, a time period which contains both a day and a night. Furthermore, a day could be the length of time that someone works at job during a single day, their work shift. In scientific English there is the distinction between a sidereal day and a synodic day.
5) Stardates. No assumptions are made about stardates. If episodes happen in stardate order, it is possible that there is a fixed relationship between the passage of stardates and time on planets, so that there could be X stardates in one Earth year, for example. But if episodes happen in production order or airdate order stardates would increase and decrease over time, and thus calculating the relationship between stardates and planetary time would be much more complex.
[Added May 4, 2020. I note that it is possible that stardates go from 0000.0 to 9999.9 and then turn back to 0000.0. It is also possible that in TOS stardates have more digits than are ever actually mentioned on screen. So that stardate 429999.9 would be followed by stardate 430000.0 and the stardates would go up to stardate 439999.9 and then to 440000.0,and so on. But only the last four digits before the decimal point and the ones after the decimal point would be mentioned. Thus it might not always be true that an episode with a higher stardate if after an episode with a lower stardate.]
6) Order of episodes. No assumptions are made about the order of episodes. If episodes happen in stardate order there can be a simple relationship between stardates and the passage of time on planets. But if episodes happen in production order, or airdate order, or in no specified order, stardates will go up and down over time.
[Added May 4, 2020. I note that a fourth possible order which I have suggested sometimes is by order of seasons, and by order of stardates for episodes within a season. That eliminates different seasons having overlapping stardate ranges, but requires that stardates be rolled back between seasons for some reason.
And of course there are the possible viewing orders of from "best" to "worst" according to some ranking, or from "worset" to Best", or aphabetical order, or reverse alphabetical order.
The Short Treks episode "Ephraim and Dot" involves glimpses of events from several TOS episodes. Those scenes are not seen in airdate order, production order, or stardate order, and so in any fictional universe in which "Ephraim and Dot" is canon, either those scenes are show in a different order from when they really happened, or else TOS episodes do not happen in airdate, production order, or stardate order, and possibly they don't happen in any logical or predictable order and can be arranged anyway a chronologist wants. I discuss tha tin post number 69 at: https://www.trekbbs.com/threads/whi...e-alternate-universes-as-others.298962/page-4]
7) When a span of years is given by someone other than Spock or a computer, it is assumed that they are speaking vaguely. If they mention X centuries or X hundred years, it is assumed that they would do so if the actual time span was anywhere between X-1 hundred years and X+1 hundred years. It is hoped that by interpreting each such statement as broadly as possible, combining several such time ranges to find the time ot TOS will produce a time span where all those time spans overlap, instead of finding that the time spans do not overlap at all.
8) Alternate universe. It is assumed that, as should be the case with most highly episodic shows with many episodes, most TOS episodes happen in separate alternate universes of their own, except for the few episodes which have evidence of being sequels to other episodes which thus happen in the same alternate universe. It is also assumed that Star Trek, like most works of fiction, happens in an alternate universe. And to be more precise, the alternate universe of Star Trek diverged from our time line and universe some time before, and not after, the first TOS episodes were made.
There is a thread about which Star Trek producitions are in the same alternate universe as others. https://www.trekbbs.com/threads/whi...he-same-alternate-universes-as-others.298962/
See for example, post number 44 and post number 69 there.
I think that is a complete list of the assumptions that I mostly do not make in my Star Trek chronological work.
I guess that I will discuss the chronological evidence in the episodes in the chronological order that episodes were broadcast, to show what could be deduced by an observer as more and more episodes were shown, but without assuming that the episodes happen in broadcast order.
[Added May 4, 2020. I think that any good attempt at Star Trek chronology should have three parts. In one part the episodes are arranged in airdate order, and in another part the episodes are arranged in production order, and in another part the episodes are arranged in stardate order.}
A list of assumptions which are mostly not, repeat not, made,:
1) The official dates from Star Trek Chronology: The History of the Future are not used. They are official, but they are not canonical and thus they might not be correct. Since hundreds of productions have been made using the Star Trek Chronology: The History of the Future as a basis for chronology, as a general rule Star Trek productions should probably not happen too long before or after the dates that the official chronology gives, but those dates are not considered to be canon evidence or the last word. Since TOS was written decades before the official chronology was decided on, there is no reason to follow the official chronology in deciding how TOS should be dated from its own internal evidence.
2) All dates given are considered to be probably, but not certainly, dates in various Earth dating systems. It is possible that assigning dates to an extraterrestrial dating system may be necessary to solve some dating problems, so that is not arbitrarily ruled out.
3) Earth dates are not assumed to be dates in the Anno Domini dating system. Dozens or hundreds of systems of counting the years from various calendar eras have been used, and are still used, on Earth, and others might be invented in the future before the time of TOS. If someone specifies a date is AD (Anno Domini) or CE (Common Era) the dating system is thus specified. If someone doesn't specify the dating system it remains an unidentified dating system.
I believe that from time to time various pressure groups on Earth persuade the United Earth government to change the United Earth flag, and anthem, and other symbols, including changing the official calendar era of the United Earth. Thus not all Star Trek dates are given in the same calendar. Evidence for that can be seen as early as in TOS.
4) Time periods are assumed to probably, but not certainly, be Earth time periods. The possibility that characters might sometimes use other, non terrestrial, time periods should not be arbitrarily ruled out as a solution to chronological problems. For example Admiral Morrow might have been using years longer than Earth years when he said that the Enterprise was 20 years old in Star Trek III: The Search For Spock.
Note that in informal English the word day has two meanings. One is a period of light, following and followed by a period of dark called night. The other is the period of time between two immediately successive midnights at the same place on Earth, a time period which contains both a day and a night. Furthermore, a day could be the length of time that someone works at job during a single day, their work shift. In scientific English there is the distinction between a sidereal day and a synodic day.
5) Stardates. No assumptions are made about stardates. If episodes happen in stardate order, it is possible that there is a fixed relationship between the passage of stardates and time on planets, so that there could be X stardates in one Earth year, for example. But if episodes happen in production order or airdate order stardates would increase and decrease over time, and thus calculating the relationship between stardates and planetary time would be much more complex.
[Added May 4, 2020. I note that it is possible that stardates go from 0000.0 to 9999.9 and then turn back to 0000.0. It is also possible that in TOS stardates have more digits than are ever actually mentioned on screen. So that stardate 429999.9 would be followed by stardate 430000.0 and the stardates would go up to stardate 439999.9 and then to 440000.0,and so on. But only the last four digits before the decimal point and the ones after the decimal point would be mentioned. Thus it might not always be true that an episode with a higher stardate if after an episode with a lower stardate.]
6) Order of episodes. No assumptions are made about the order of episodes. If episodes happen in stardate order there can be a simple relationship between stardates and the passage of time on planets. But if episodes happen in production order, or airdate order, or in no specified order, stardates will go up and down over time.
[Added May 4, 2020. I note that a fourth possible order which I have suggested sometimes is by order of seasons, and by order of stardates for episodes within a season. That eliminates different seasons having overlapping stardate ranges, but requires that stardates be rolled back between seasons for some reason.
And of course there are the possible viewing orders of from "best" to "worst" according to some ranking, or from "worset" to Best", or aphabetical order, or reverse alphabetical order.
The Short Treks episode "Ephraim and Dot" involves glimpses of events from several TOS episodes. Those scenes are not seen in airdate order, production order, or stardate order, and so in any fictional universe in which "Ephraim and Dot" is canon, either those scenes are show in a different order from when they really happened, or else TOS episodes do not happen in airdate, production order, or stardate order, and possibly they don't happen in any logical or predictable order and can be arranged anyway a chronologist wants. I discuss tha tin post number 69 at: https://www.trekbbs.com/threads/whi...e-alternate-universes-as-others.298962/page-4]
7) When a span of years is given by someone other than Spock or a computer, it is assumed that they are speaking vaguely. If they mention X centuries or X hundred years, it is assumed that they would do so if the actual time span was anywhere between X-1 hundred years and X+1 hundred years. It is hoped that by interpreting each such statement as broadly as possible, combining several such time ranges to find the time ot TOS will produce a time span where all those time spans overlap, instead of finding that the time spans do not overlap at all.
8) Alternate universe. It is assumed that, as should be the case with most highly episodic shows with many episodes, most TOS episodes happen in separate alternate universes of their own, except for the few episodes which have evidence of being sequels to other episodes which thus happen in the same alternate universe. It is also assumed that Star Trek, like most works of fiction, happens in an alternate universe. And to be more precise, the alternate universe of Star Trek diverged from our time line and universe some time before, and not after, the first TOS episodes were made.
There is a thread about which Star Trek producitions are in the same alternate universe as others. https://www.trekbbs.com/threads/whi...he-same-alternate-universes-as-others.298962/
See for example, post number 44 and post number 69 there.
I think that is a complete list of the assumptions that I mostly do not make in my Star Trek chronological work.
I guess that I will discuss the chronological evidence in the episodes in the chronological order that episodes were broadcast, to show what could be deduced by an observer as more and more episodes were shown, but without assuming that the episodes happen in broadcast order.
[Added May 4, 2020. I think that any good attempt at Star Trek chronology should have three parts. In one part the episodes are arranged in airdate order, and in another part the episodes are arranged in production order, and in another part the episodes are arranged in stardate order.}
Last edited: