Feh! My formatting got all fux0red. Here, I'll do it in HTML:
0000
First Era begins.
Unknown Light Age begins.
0500
First Leveller arises.
Unknown Dark Age begins.
1000
First Great Hero arises, kills First Leveller.
Second Era begins.
Unknown Light Age begins.
1500
Second Leveller arises.
Unknown Dark Age begins.
2000
Second Great Hero arises, kills Second Leveller.
Third Era begins.
Unknown Light Age begins.
2500
Third Leveller arises.
Unknown Dark Age begins.
3000
Third Great Hero arises, kills Third Leveller.
Fourth Era begins.
Golden/Axe(?) Age (Light) begins.
3500
Fourth Leveller arises.
Golden/Axe(?) Age (Dark) begins.
4000
Tireces arises, kills Fourth Leveller.
Fifth Era begins.
Age Of Reason (Light) begins.
Now here things start to get screwy...
4500
Moagim arises.
Wind Age (Dark) begins.
Connacht arises, kills Moagim.
Myrkridia ravage the land.
5000
Sixth Era begins.
New Light Age scheduled to begin; doesn't happen.
Myrkridia continue to ravage the land.
5500
Connacht exterminates Myrkridia.
Wolf Age / Age of Light begins.
New Dark Age scheduled to begin; opposite happens.
6000
Balor arises.
Seventh Era begins.
Sword Age begins.
New Light Age scheduled to begin; opposite happens.
6500
Alric arises, kills Balor.
New Dark Age scheduled to begin; opposite happens.
6560
Soulblighter returns, ruins the new Light Age.
Soulblighter killed; new Light Age resumes.
So, all thanks to Connacht's killing Moagim 500 years
early, the cycles are thoroughly screwed up now. Am I
right, you lucky GURPS owners?