How to use WP_Query to filter posts modified after a specific date

I’m looking for a way to get all posts modified after a specific date, but still couldn’t find an answer for that online; All websites says that this is still not supported until now.

Is querying posts modified after a date supported in WordPress now? If it’s supported, how can I achieve that?

If it’s not supported yet, is there an alternative way I can achieve the same thing by modifying the global $wp_query object?

It is possible, using the date_query argument. By default this uses the publication date, but you can tell it to use the modified date by using the column argument. So if you wanted to query all posts modified after June 30th 2019, you’d use:

'date_query' => [
    'column' => 'post_modified',
    'after'  => [
        'year'  => 2019,
        'month' => 6,
        'day'   => 30,
    ],
],

The column parameter of WP_Date_Query supports:

• post_date (default)
• post_date_gmt
• post_modified
• post_modified_gmt
• comment_date
• comment_date_gmt

A WP shell example for the date query in WP_Query with post_modified_gmt and the after parameter:

wp> echo ( new WP_Query( [ 'date_query' => [ [ 'column' => 'post_modified_gmt', 
  'after' => '2 days ago' ] ] ] ) )->request;

will output:

SELECT SQL_CALC_FOUND_ROWS  wp_posts.ID FROM tfl_posts  WHERE 1=1  AND (
  wp_posts.post_modified_gmt > '2019-11-16 10:00:27'

For further information look e.g. into the dev documents here:

https://developer.wordpress.org/reference/classes/wp_date_query/
https://developer.wordpress.org/reference/classes/wp_query/#date-parameters