title: Preferred format to store a date in Wordpress custom post (meta) (pluginn development)
body: <p>For a booking plugin I need to store dates (start date and end date) for each booking. I want to store bookings in a custom post type, so I do not need to make my own tables in the database. </p>
  
  <p>So I will store the dates in a meta.</p>
  
  <p>I could store the date in mysql format, Ymd, or unix timestamp. But which way is best? Which way would be the Wordpress way?</p>
  
  <p>ps: would this also work best for dates stored in settings?</p>