I've had stuff arrive from Asia in 3-4 days, sometimes 2-3 weeks. All depends on how it's shipped and how customs feel. Sometimes your package clears without question. Other times, they can hold it for as long as they deem necessary to inspect it and such. More often than not, that's not too long, but you never know with customs. Sometimes things that are totally legit to import get held up for extended periods of time.
As for the tracking system, you may see an update Monday morning, but more than likely Monday night.