So I dug a bit more into this:
I found these two sources the TL was created from decades ago:
This has a link to a rtf file that lays out the TL
https://web.archive.org/web/20000818060140/http://www.wizards.com/dnd/DnDDownloads_prev.asp
168th King’s Age (-1,694)
-Desert’s Fury
After years of study Dregoth finally deciphers halfling records found in
the caverns beneath Guistenal. The end result is the creation of the first
generation dray, which Dregoth deems a failure and banishes to Kragmorta.
-Friend’s Defiance
The thri-kreen prophet Ka’Cha begins the first of several journeys across
the Tablelands to spread the word of peace and enlightenment to the
thri-kreen, as well as other races.
-Guthay’s Agitation
After several more failures Dregoth succeeds in his experiments, and the
second generation of dray are created in his own image.
The second source is Flip’s old site:
http://meteu.octoraro.org/sands/timeline.html
it has the following:
168th King’s Age (-1,694)
-Desert’s Fury
After years of study Dregoth finally deciphers halfling records found in the caverns beneath Guistenal. The end result is the creation of the first generation dray, which Dregoth deems a failure and banishes to Kragmorta.
-Friend’s Defiance
The thri-kreen prophet Ka’Cha begins the first of several journeys across the Tablelands to spread the word of peace and enlightenment to the thri-kreen, as well as other races.
-Guthay’s Fury
After several more failures Dregoth succeeds in his experiments, and the second generation of dray are created in his own image.
Athas.org TL has the following:
168th King’s Age the year of Guthay’s Fury (Free Year: -1698)
After several more failures Dregoth succeeds in his experiments, and the second generation of dray are created in his own image.
read more…
168th King’s Age the year of Desert’s Fury (Free Year: -1684)
After years of study Dregoth finally deciphers halfling records found in the caverns beneath Guistenal. The end result is the creation of the first generation dray, which Dregoth deems a failure and banishes to Kragmorta.
read more…
168th King’s Age the year of Friend’s Defiance (Free Year: -1652)
The thri-kreen prophet Ka’Cha begins the first of several journeys across the Tablelands to spread the word of peace and enlightenment to the thri-kreen, as well as other races.
A couple of things: I am not sure if these dates have the correction for not having a year zero. and there is an obvious discrepancy between the Endlean Sofean cycles for the 2nd gen dray. it could be that the Year is pulling the Endlean/Sofean pairing from the incorrect year.
This was all being worked on by John Machielson but hasnt’t been touched in a few years. I had taken a look at it previously, so I am aware of some of the issue, but it would take me a bit to dig in.
it obviously needs the following:
Line up with what CbtSS says years-wise
set the year to the correct start Kings Age
tie all endlean and sofean cycles to the corresponding correct year.
Ensure year zero is skipped.