Govia Thameslink Railway 871A23
View line Govia Thameslink Railway
Alerts for train 871A23
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
73%
19/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
60%
51/85 runs under 3 min
RT coverage: 85 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: 0 min
P90
+10min
9 in 10 runs arrive with less than this
30 days: +10 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
- Wed 26 Aug Max en route +35 min · last fix heading to Alton +35 min
- Wed 16 Sept Max en route +22 min · last fix heading to Alton +22 min
- Fri 16 Oct Max en route +30 min · last fix heading to Alton +21 min
- Fri 2 Oct Max en route +21 min · last fix heading to Alton +21 min
- Thu 24 Sept Max en route +20 min · last fix heading to Alton +20 min
Distribution · 90 days
85 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 59% · 50
- 3–10 min 29% · 25
- 10–30 min 9% · 8
- 30+ min 1% · 1
On-time by weekday
- 58% M n=12
- 54% T n=13
- 77% W n=13
- 77% T n=13
- 69% F n=13
- 75% S n=8
- 15% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 1 Nov | East Croydon 12:34 | +10 min | +12 min |
| Fri 30 Oct | Alton 11:17 | −2 min | +4 min |
| Thu 29 Oct | Alton 11:17 | −1 min | +3 min |
| Wed 28 Oct | Alton 11:18 | 0 min | — |
| Tue 27 Oct | Alton 11:22 | +3 min | +5 min |
| Mon 26 Oct | Alton 11:22 | +4 min | +4 min |
| Sun 25 Oct | Clapham Jn. C.S. 12:30 | +4 min | +4 min |
| Fri 23 Oct | Alton 11:19 | +1 min | +3 min |
| Thu 22 Oct | Alton 11:19 | 0 min | +2 min |
| Wed 21 Oct | Alton 11:19 | +1 min | +7 min |
| Tue 20 Oct | Alton 11:18 | 0 min | +2 min |
| Mon 19 Oct | Alton 11:18 | 0 min | +3 min |
| Sun 18 Oct | New Cross Gate 12:26 | +1 min | +2 min |
| Sat 17 Oct | Alton 11:18 | 0 min | +1 min |
| Fri 16 Oct | Alton 14:46 | +21 min | +30 min |
| Thu 15 Oct | Alton 11:17 | −1 min | +2 min |
| Wed 14 Oct | Alton 11:17 | −1 min | +2 min |
| Tue 13 Oct | Alton 11:19 | +1 min | +9 min |
| Mon 12 Oct | Alton 11:37 | +19 min | +19 min |
| Sun 11 Oct | Clapham Jn. C.S. 12:32 | +9 min | +9 min |
| Fri 9 Oct | Alton 11:17 | −1 min | +1 min |
| Thu 8 Oct | Alton 11:18 | 0 min | +2 min |
| Wed 7 Oct | Alton 11:17 | −1 min | — |
| Tue 6 Oct | Alton 11:17 | −1 min | +1 min |
| Mon 5 Oct | Alton 11:19 | 0 min | +1 min |
| Sun 4 Oct | 87230 12:32 | 0 min | +1 min |
| Fri 2 Oct | Alton 11:39 | +21 min | +21 min |
| Thu 1 Oct | Alton 11:20 | +1 min | +2 min |
| Wed 30 Sept | Alton 11:18 | 0 min | +1 min |
| Tue 29 Sept | Alton 11:18 | 0 min | +3 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.