[Plugin: Advanced Custom Fields] Datepicker Timestamps Incorrect

Figured it out. The above value is stored in milliseconds (I think) by the javascript date picker whereas PHP prefers seconds. So all you need to do is divide by 1000! (Thank goodness for stackoverflow.)

Here’s my code that worked:

<?php echo date( 'F jS, Y', get_field( 'publish_date' ) / 1000 ); ?>

This really should get worked into the ACF documentation, but hopefully others will find this answer here.

@ruhelamin, glad that helped!

With your off by one-day issue, try outputting the original value as a date and time to make sure that it’s actually off by a full day (i.e. exactly 24 hours) and not some in-between amount. If it’s anything other than 24 hours off, it’s probably a time zone issue that you may want to resolve. Otherwise, adding that value may sometimes make the date wrong.