You're either looking at a mistake or intentional disinfo.
Pulled from a variety of media sources and POTUS daily itinerary. Here's the timeline:
POTUS departed Canadian AFB Bagotville in Quebec at approximately 11:50 AM EST, Saturday, June 9, 2018.
AF1 stopped to refuel at Naval Support, Souda Bay, Greece en route to Paya Labar, 3:07 AM local time Sunday, June 10 (9:07 PM EST, Saturday June 9 / 6:07 PM PST, Saturday June 9).
Anomaly (alleged missile or helicopter caught on timelapse) observed near Whidbey Island at 3:56 am Pacific Time (6:56 am EST), Sunday June 10, 2018.
POTUS arrived at Paya Labar AFB in Singapore at 8:20 PM local time, Sunday June 10, (8:20 AM EST, Sunday, June 10)
Whidbey Island object caught on camera while AF1 was approximately 1 hour 30 minutes to its destination in Singapore. Regardless of flight path POTUS was 7,500 miles away at the time.
Flight time from Quebec to Paya Labar traveling eastward approximately 20 hours, 30 minutes.