Govia Thameslink Railway 871B12
View line Govia Thameslink Railway
Alerts for train 871B12
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
72%
18/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
68%
49/72 runs under 3 min
RT coverage: 72 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +1 min
P90
+14min
9 in 10 runs arrive with less than this
30 days: +12 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
- Mon 28 Sept Max en route +56 min · last fix heading to Bognor Regis C.H.S. +56 min
- Wed 23 Sept Max en route +51 min · last fix heading to Bognor Regis C.H.S. +49 min
- Fri 28 Aug Max en route +48 min · last fix heading to Bognor Regis C.H.S. +48 min
- Sat 22 Aug Max en route +23 min · last fix heading to Bognor Regis C.H.S. +22 min
- Sat 5 Sept Max en route +20 min · last fix heading to Bognor Regis C.H.S. +20 min
Distribution · 90 days
72 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 7% · 5
- On time 61% · 44
- 3–10 min 18% · 13
- 10–30 min 10% · 7
- 30+ min 4% · 3
On-time by weekday
- 54% M n=13
- 83% T n=12
- 75% W n=12
- 75% T n=12
- 67% F n=12
- 55% S n=11
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 20 Oct | Bognor Regis 09:59 | −1 min | +2 min |
| Mon 19 Oct | Bognor Regis 10:00 | 0 min | +2 min |
| Sat 17 Oct | Bognor Regis 10:03 | +3 min | +3 min |
| Fri 16 Oct | Bognor Regis 09:59 | −2 min | — |
| Thu 15 Oct | Bognor Regis 10:01 | +1 min | +2 min |
| Wed 14 Oct | Bognor Regis 09:59 | −1 min | +3 min |
| Tue 13 Oct | Bognor Regis 10:05 | +5 min | +6 min |
| Mon 12 Oct | Bognor Regis 09:59 | −1 min | — |
| Sat 10 Oct | Bognor Regis 10:00 | −1 min | +5 min |
| Fri 9 Oct | Bognor Regis 09:59 | −1 min | +3 min |
| Thu 8 Oct | Bognor Regis 10:03 | +2 min | +4 min |
| Wed 7 Oct | Bognor Regis 10:00 | −1 min | +1 min |
| Tue 6 Oct | Bognor Regis 15:50 | +2 min | +3 min |
| Mon 5 Oct | Bognor Regis C.H.S. 10:05 | +5 min | +6 min |
| Sat 3 Oct | Bognor Regis C.H.S. 10:00 | −1 min | +1 min |
| Fri 2 Oct | Bognor Regis C.H.S. 10:16 | +16 min | +17 min |
| Thu 1 Oct | Bognor Regis C.H.S. 10:06 | +6 min | +6 min |
| Wed 30 Sept | Bognor Regis C.H.S. 10:02 | +2 min | +5 min |
| Tue 29 Sept | Bognor Regis C.H.S. 09:59 | −1 min | +4 min |
| Mon 28 Sept | Bognor Regis C.H.S. 10:56 | +56 min | +56 min |
| Sat 26 Sept | Bognor Regis C.H.S. 10:03 | +2 min | +3 min |
| Fri 25 Sept | Bognor Regis C.H.S. 10:00 | 0 min | +4 min |
| Thu 24 Sept | Bognor Regis C.H.S. 10:01 | +1 min | +6 min |
| Wed 23 Sept | Bognor Regis C.H.S. 10:49 | +49 min | +51 min |
| Tue 22 Sept | Bognor Regis C.H.S. 10:01 | +1 min | +6 min |
| Mon 21 Sept | Bognor Regis C.H.S. 10:05 | +5 min | +6 min |
| Fri 18 Sept | Bognor Regis C.H.S. 10:01 | +1 min | +4 min |
| Thu 17 Sept | Bognor Regis C.H.S. 09:59 | −1 min | +4 min |
| Wed 16 Sept | Bognor Regis C.H.S. 10:04 | +4 min | +7 min |
| Tue 15 Sept | Bognor Regis C.H.S. 10:10 | +9 min | +12 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.