SFDC returns a BadRequest: URI Scheme is too long for the following query.
services/data/v39.0/query/?q=SELECT Id, Name FROM Contact WHERE Viewer_Locked_By_Date_UTC__c < 2017-12-05T22:39:37Z LIMIT 2000 OFFSET 0
I believe it has something to do with:
Viewer_Locked_By_Date_UTC__c < 2017-12-05T22:39:37Z
But don't know why...can anyone explain how to compare a DateTime via Force.com API?