Minimal Reproduction for Renovate Bot Discussion renovatebot/renovate#21427

Expected

The used schedule in this renovate.json:

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "extends": [
    "config:base"
  ],
   "schedule": ["every 2 months on the first saturday of the month"]
}

should work.

According the Codepen mentioned here: https://docs.renovatebot.com/configuration-options/#schedule it is valid:

Outcome

Renovate creates an issue https://github.com/MaxWinterstein/renovate-minimal-reproduction-21427/issues/4 and complains about invalid schedule.