服務日期起始時間從 01:33 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9AStevenage Bus St Bay A04:32—9DHitchin Hermitage Road04:52—9BStevenage Bus St Bay A05:32—9AStevenage Bus St Bay A06:32—9BStevenage Bus St Bay A07:32—9AStevenage Bus St Bay A08:32—9BStevenage Bus St Bay A09:32—9AStevenage Bus St Bay A10:32—9BStevenage Bus St Bay A11:32—9AStevenage Bus St Bay A12:32—9BStevenage Bus St Bay A13:32—9AStevenage Bus St Bay A14:33—9Shortstown North Drive15:17—9BStevenage Bus St Bay A15:33—9AStevenage Bus St Bay A16:33—9BStevenage Bus St Bay A17:33—9AStevenage Bus St Bay A18:32—9Shortstown North Drive19:32—9Shortstown North Drive20:32—9Shortstown North Drive21:32—9Shortstown North Drive22:32—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。