How can I schedule a post to publish every 45 days?

Post Scheduling on the Publish Dashboard:
If your goal is to publish the same social post every 45 days, here's what you need to do:
  1. After publishing or scheduling your post for the first time, navigate to the Queue tab or Sent tab.
  1. Locate the desired post, and click on the actions column on the right side.
  1. Click the dropdown arrow and select 'Open as Copy'.
  1. From there, schedule that post for the next 45 days.
Remember, you will need to repeat this process until you reach the desired number of times you want your post to be published.