After multiple research I didn't find the correct answer to my question.
I need to order my custom post type first by date and then by time.
Here's what I tried: http://pastebin.com/BRR6h08j
It order well by the date but not by the time. And I need to show everypost (even if the date is passed)
If someone can help me getting my correct meta_keys
I know the problem is here:
'meta_query' => array( 'relation' => 'AND', array( 'key' => 'heure_de_lartiste', 'value' => $todaysDate, 'compare' => '>=' ) ),
I don't know what to put in "value" and "compare"
Thanks a lot,