At 9:23:28 pm, look low in the WSW sky. The ISS will be traveling towards the NE and appear as a fast-moving bright star. If you seek blinking lights, it’s not the ISS – it’s a plane! It will reach its peak at 9:26:31 — nearly straight overhead – going left-to-right if you’re facing NNW. It will disappear from view at 9:29:34 in the NE sky.
Also: Photographing the ISS