Welcome aboard, Castor Pollux!
The Drabblecast podcast has had at least a dozen stories, drabbles, and twabbles that feature time-travel.
Off the top of my head, in 30 seconds, 2 of my favorites are:
- Drabblecast 109 - "Babel Probe"
- Drabblecast 150 - "Morris and the Machine"
There are also scores of mostly good drabbles and twabbles, with time travel, that didn't make the podcast. You can find these here in the forum.