You may find that is the time it has updated in the Sendle System.  To Check, you need to check the pickup Couriers System with the Pickup Couriers Tracking Number - Sendle do not use BluJay which Australia Post and all the major Couriers use  so there can be a gap as Sendle has to update everything.  You get a similar situation with Ebay Tracking vs  AusPost and Courier Tracking which is in real time but Ebay Tracking is not.  BluJay appear to have cracked down on third parties and third party apps getting live data.     Sendle has its own system which is not the system used by everyone else.