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 learns of Kid's heritage somehow. 
*Lucca, at some points, demonstrates the ability to construct incomplete Time
Eggs, providing Kid with one.
*Lucca also gives Kid an amulet (really a bag with the Zeal emblem containing
a piece of wood inside).
*Lucca composes a letter to Luccia and leaves it with her. 

From: Chronology