1014 A.D.
Home Timeline[edit]
-Leah is born.*** ***There is common speculation that Leah came to Gaia's Navel by some warp in time. This is not altogether out of the question, considering Gaia's Navel was always present in the sea of El Nido, and not one of the terraformed islands created by Chronopolis; also, two gates existed in 65000000 B.C. in Chrono Trigger, and Kino was found atop Mystic Mountain as a baby. Perhaps Leah went back to that era and then mothered Ayla; however, remember that this would have had to happen before the actions of Crono as well, as they depend on Ayla's existence, meaning if the theory is true, Leah had to return to 65000000 B.C. in the Lavos timeline or not visit Gaia's Navel at all.
Another Timeline[edit]
-Leah is born.*** ***There is common speculation that Leah came to Gaia's Navel by some warp in time. This is not altogether out of the question, considering Gaia's Navel was always present in the sea of El Nido, and not one of the terraformed islands created by Chronopolis; also, two gates existed in 65000000 B.C. in Chrono Trigger, and Kino was found atop Mystic Mountain as a baby. Perhaps Leah went back to that era and then mothered Ayla; however, remember that this would have had to happen before the actions of Crono as well, as they depend on Ayla's existence, meaning if the theory is true, Leah had to return to 65000000 B.C. in the Lavos timeline or not visit Gaia's Navel at all.
From: Chronology