Govia Thameslink Railway 871B20
View line Govia Thameslink Railway
Alerts for train 871B20
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Govia Thameslink Railway.
The mini-map returns when the train runs
On-time · 30 days
67%
16/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
70%
52/74 runs under 3 min
RT coverage: 74 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +2 min
P90
+8min
9 in 10 runs arrive with less than this
30 days: +7 min
Last 30 days
Delay at the end of each run, in minutes. One bar per run.
- On time (<3 min)
- 3–10 min
- 10–30 min
- 30+ min
- Partial coverage
- No data
Worst days
- Sat 26 Sept Max en route +17 min · last fix heading to Bognor Regis C.H.S. +16 min
- Fri 14 Aug Max en route +22 min · last fix heading to Bognor Regis C.H.S. +15 min
- Wed 12 Aug Max en route +18 min · last fix heading to Bognor Regis C.H.S. +15 min
- Sat 22 Aug Max en route +11 min · last fix heading to Bognor Regis C.H.S. +10 min
- Thu 20 Aug Max en route +11 min · last fix heading to Bognor Regis C.H.S. +9 min
Distribution · 90 days
74 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 69% · 51
- 3–10 min 24% · 18
- 10–30 min 5% · 4
- 30+ min 0% · 0
On-time by weekday
- 77% M n=13
- 85% T n=13
- 69% W n=13
- 77% T n=13
- 67% F n=12
- 40% S n=10
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 15 Oct | Bognor Regis 12:03 | −1 min | — |
| Wed 14 Oct | Bognor Regis 12:05 | +2 min | +2 min |
| Tue 13 Oct | Bognor Regis 12:10 | +7 min | +11 min |
| Mon 12 Oct | Bognor Regis 12:03 | 0 min | +1 min |
| Sat 10 Oct | Bognor Regis 12:01 | +1 min | +5 min |
| Fri 9 Oct | Bognor Regis 12:06 | +3 min | +5 min |
| Thu 8 Oct | Bognor Regis 12:05 | +2 min | +2 min |
| Wed 7 Oct | Bognor Regis 12:08 | +5 min | +7 min |
| Tue 6 Oct | Bognor Regis 12:04 | +1 min | +1 min |
| Mon 5 Oct | Bognor Regis 12:03 | 0 min | — |
| Sat 3 Oct | Bognor Regis C.H.S. 11:59 | −1 min | +1 min |
| Fri 2 Oct | Bognor Regis C.H.S. 15:38 | 0 min | +10 min |
| Thu 1 Oct | Bognor Regis C.H.S. 12:03 | 0 min | +1 min |
| Wed 30 Sept | Bognor Regis C.H.S. 12:03 | 0 min | +3 min |
| Tue 29 Sept | Bognor Regis C.H.S. 12:03 | 0 min | +2 min |
| Mon 28 Sept | Bognor Regis C.H.S. 12:09 | +6 min | +9 min |
| Sat 26 Sept | Bognor Regis C.H.S. 12:16 | +16 min | +17 min |
| Fri 25 Sept | Bognor Regis C.H.S. 12:06 | +3 min | +6 min |
| Thu 24 Sept | Bognor Regis C.H.S. 12:05 | +2 min | +7 min |
| Wed 23 Sept | Bognor Regis C.H.S. 12:11 | +8 min | +11 min |
| Tue 22 Sept | Bognor Regis C.H.S. 12:05 | +2 min | +5 min |
| Mon 21 Sept | Bognor Regis C.H.S. 12:02 | −1 min | +3 min |
| Fri 18 Sept | Bognor Regis C.H.S. 12:05 | +2 min | +6 min |
| Thu 17 Sept | Bognor Regis C.H.S. 12:08 | +5 min | +11 min |
| Wed 16 Sept | Bognor Regis C.H.S. 12:02 | −1 min | — |
| Tue 15 Sept | Bognor Regis C.H.S. 12:04 | +1 min | +5 min |
| Mon 14 Sept | Bognor Regis C.H.S. 12:03 | 0 min | +4 min |
| Fri 11 Sept | Bognor Regis C.H.S. 12:03 | 0 min | +8 min |
| Thu 10 Sept | Bognor Regis C.H.S. 12:03 | 0 min | +6 min |
| Wed 9 Sept | Bognor Regis C.H.S. 12:05 | +2 min | +10 min |
Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.