Change record status: 
Project: 
Introduced in branch: 
8.5.x
Introduced in version: 
8.5.0
Description: 

The datetime_date_default_time() has been deprecated.

The ::setDefaultDateTime() method on \Drupal\Component\Datetime\DateTimePlus and inherited by \Drupal\Core\Datetime\DrupalDateTime should be used instead.

Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done