If today is only reaching Singapore port, i highly doubt can deliver today. Custom clearance needs a few hours to process, then deliver to UPS warehouse to sort into district before delivering. At best sat if not mon.
Just checked mine, it had also reached SG at 6.51am, same route as you. Hope by sat can deliver. Although UPS stated by end of today also can deliver but can hardly trust their updates since they skip a lot of delays till i check at parcelsapp website.
99% of the time will deliver on the same day it reaches changi for lenovo. unless got bad weather etc in which the delivery person takes longer to deliver each parcel, then maybe will shift to next day.