When two Vorgon criminals, Ajur and Boratus, attempted to steal the Uthat, Dano traveled back in time to the 22nd century and hid it on the planet Risa, where it would remain undiscovered until the year 2366. (TNG: "Captain's Holiday")
In the Star Trek Online episode "Stormbound", it's revealed that Kal Dano was the pilot of the Time Travel Pod found by the crew of the Enterprise (NX-01) in Future Tense. After Kal Dano hid the Tox Uthat on Risa, he was attacked by Tholians in 2410 who wanted to claim the device. During the battle, his temporal drive was damaged and send his ship back in time to an unknown date, resulting in the events of Future Tense.