Profile: Alex

Problem:
Trying to filter custom posts by custom date in PHP:

$campaigns = get_posts( array(
'post_type' => 'campaign_post_type', // Types custom post type
'numberposts' => -1,
'meta_query' => array( array(
'key' => 'wpcf-campaign_date', // Types Date custom field
'value' => date( ??????? ),
'compare' => '>=',
'type' => 'DATE'
)) 
));

what should be the date format for the function date( ??? ), to correctly compare types-date with the current system date in meta_query?
Solution:
The custom date field created with Types plugin, which is storing time stamp value in the database, I suggest you try with another PHP function strtotime(), for example:

...
'value' => strtotime("last Monday"),
...

Relevant Documentation:
http://php.net/strtotime
strtotime — Parse about any English textual datetime description into a Unix timestamp