服務日期起始時間從 18:00 出發於 2026年9月9日預定出發顯示 17公車行程至預定觀察到321Watford Hospital Car Park18:00—725Heathrow Central Bus Station18:07—321Beechen Grove18:19—321Watford Hospital Car Park18:37—724Heathrow Central Bus Station18:42—321Watford Hospital Car Park19:13—725Town Hall19:16—724Heathrow Central Bus Station19:46—321Watford Hospital Car Park19:47—321Watford Hospital Car Park20:12—724Heathrow Central Bus Station20:41—321Watford Hospital Car Park20:42—321Watford Hospital Car Park21:12—724Heathrow Central Bus Station21:33—321Watford Hospital Car Park22:12—724Heathrow Central Bus Station22:23—724Heathrow Terminal 523:23—預定和觀察到的數值分開保存。當缺少特定站點的即時觀察時，BustimeFinder 不會捏造即時出發。