服務日期起始時間從 16:49 出發於 2026年9月9日預定出發顯示 21公車行程至預定觀察到321Watford Hospital Car Park17:00—610Hatfield Station (2)17:19—321Watford Hospital Car Park17:20—321Beechen Grove17:40—610Hatfield Station (2)17:49—321Watford Hospital Car Park17:59—610Hatfield Station (2)18:17—321St Peter's Street18:19—321Watford Hospital Car Park18:38—610Hatfield Station (2)18:47—321St Peter's Street18:58—321Watford Hospital Car Park19:18—610Hatfield Station (2)19:19—610Hatfield Station (2)19:43—321Watford Hospital Car Park19:47—321Watford Hospital Car Park20:17—321Watford Hospital Car Park20:47—610Hatfield Station (2)20:48—321St Peter's Street21:17—321Watford Hospital Car Park21:47—321St Peter's Street22:17—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。