1000 A.D. to 1010 A.D.

Keystone T-2

-Lucca proposes that time travel is possible with a Time Egg, which utilizes 
miniature black holes. The first Chrono Trigger was a Time Egg. 
-Lucca knows of Kid's heritage, somehow. 
-Lucca composes a letter to Luccia and leaves it with her. 
*Lucca, at some points, demonstrates the ability to construct incomplete Time
Eggs.
*Luccia loses her brother in a freak accident in a Porre lab, prompting her 
to come to El Nido. Note that this accident could be an explosion set by
Norris to destroy Grobyc's level seven tech, the StrongArm. However, this may
have taken place in either dimension as well, which would explain how an
intact arm resides at Chronopolis.

From: Chronology