In Which Timezone Do the Schedules Operate?
Schedules always use your marketplace’s timezone so that your automated actions run reliably at the right time for your campaigns.
Answer
The execution of Schedules always follows the timezone of the selected marketplace. Selecting multiple marketplaces at once is not possible because the different timezones could conflict with each other.
If you want to manage actions across different timezones (for example, UK and DE), you need to create a separate schedule for each region.