Welcome to the Make community!
Have a scenario watch new items and schedule a Cron Job webhook callback using apps like 0CodeKit that allows you to schedule a “callback” to a “Custom Webhook” trigger in another scenario.
You can use an external module to schedule a webhook callback to your secondary scenario at the exact time for each item,
You don’t have to use a data store, this is just an example. You can use Google Sheets, Google Calendar, etc.
Alternatively, if you are already using Airtable, you can use an Airtable formula and built-in automation.