Based on the last 12 Existing Home Sales events in United States, we may see a 30 pip movement on GBPUSD within 2 hours following the event release at 21 Jun 14:00 UTC. GBPUSD may trend upwards 2 hours following the event release at 21 Jun 14:00 UTC if the released value is < 5.4M Historical events that allowed us to draw this conclusion

19 May 14:00

20 Apr 14:00

18 Mar 14:00

22 Dec 15:00

22 Sep 14:00