Three shows from the same web channel:
https://www.tvmaze.com/shows/52388/onision-in-real-life
https://www.tvmaze.com/shows/52311/gold-rush-freddy-dodges-mine-rescue
https://www.tvmaze.com/shows/52245/six-degrees-with-mike-rowe
All three have exactly the same settings: no default airtime, no airtime for the premiere episode. Despite that, on the countdown page they're displayed at different time: https://i.imgur.com/A0q36HM.png
TL;DR All today's discovery+ premieres are shown at 12:00, except Six Degrees with Mike Rowe, which is shown at 07:00