Per the reasoning here, Season 2 of Star Wars: The Bad Batch takes place around 18 BBY. The tally marks made by Omega in The Bad Batch Season 3's first episode, "Confined," indicate the episode must take place at least twenty-one standard days following her capture as depicted in the Season 2 episode "Plan 99." According to 
"Confined" Trivia Guide | Star Wars The Bad Batch on StarWars.com (backup link), Omega spends about 164 further days in captivity by the end of "Confined." As such, the events of Season 3 must begin around 18 BBY.
Usage
{{TBBS3Date}}
Pipelinked
Per the reasoning [[:Template:TBBS3Date|here]], the events of [[The Bad Batch Season 3|''The Bad Batch'' Season 3]] take place around [[18 BBY]].
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