Is 7 days the same as 168 hours or 10080 minutes

If I set (in a Campaign) an action to take place 7 days after the previous one, is that the same as for example setting that for 10080 munites?

Why this is important:
If I send an email at 2022-01-01 14:35, I would like the next one to be sent at 2022-01-08 14:35. Is it enough to set that with days, or would days somehow “round” that off, so that the next email will be sent at 2022-01-08 00:00.