Govia Thameslink Railway 871A31
View line Govia Thameslink Railway
Alerts for train 871A31
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
64%
16/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
64%
53/83 runs under 3 min
RT coverage: 83 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +2 min
P90
+8min
9 in 10 runs arrive with less than this
30 days: +6 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
- Fri 28 Aug Max en route +21 min · last fix heading to Alton +21 min
- Mon 7 Sept Max en route +20 min · last fix heading to Alton +20 min
- Mon 26 Oct Max en route +18 min · last fix heading to Alton +18 min
- Sun 25 Oct Max en route +14 min · last fix heading to Earlswood (Surrey) +14 min
- Sun 6 Sept Max en route +15 min · last fix heading to 87230 +13 min
Distribution · 90 days
83 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 64% · 53
- 3–10 min 29% · 24
- 10–30 min 7% · 6
- 30+ min 0% · 0
On-time by weekday
- 62% M n=13
- 58% T n=12
- 85% W n=13
- 69% T n=13
- 62% F n=13
- 88% S n=8
- 27% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 7 Nov | East Croydon 13:59 | +5 min | +7 min |
| Fri 6 Nov | Farnham 12:54 | 0 min | — |
| Thu 5 Nov | Alton 13:09 | +2 min | +2 min |
| Wed 4 Nov | Alton 13:12 | +2 min | +3 min |
| Tue 3 Nov | Alton 13:14 | +4 min | +4 min |
| Mon 2 Nov | Alton 13:14 | +4 min | +7 min |
| Sun 1 Nov | Clapham Jn. C.S. 14:30 | +6 min | +8 min |
| Fri 30 Oct | Alton 13:22 | +4 min | +4 min |
| Thu 29 Oct | Alton 13:20 | +2 min | +2 min |
| Wed 28 Oct | Alton 13:21 | +2 min | +3 min |
| Mon 26 Oct | Alton 13:36 | +18 min | +18 min |
| Sun 25 Oct | Earlswood (Surrey) 14:39 | +14 min | +14 min |
| Fri 23 Oct | Alton 13:18 | −1 min | +3 min |
| Thu 22 Oct | Alton 13:19 | +1 min | +4 min |
| Wed 21 Oct | Alton 13:20 | +2 min | +3 min |
| Tue 20 Oct | Alton 13:23 | +5 min | +6 min |
| Mon 19 Oct | Alton 13:17 | −1 min | +1 min |
| Sun 18 Oct | Sydenham 14:27 | +2 min | +2 min |
| Sat 17 Oct | Alton 13:20 | 0 min | +1 min |
| Fri 16 Oct | Alton 13:21 | +3 min | +7 min |
| Thu 15 Oct | Alton 13:18 | −1 min | +1 min |
| Wed 14 Oct | Alton 13:18 | 0 min | +3 min |
| Tue 13 Oct | Alton 13:17 | −1 min | +1 min |
| Mon 12 Oct | Alton 13:18 | 0 min | +1 min |
| Fri 9 Oct | Alton 13:18 | 0 min | +1 min |
| Thu 8 Oct | Alton 13:21 | +3 min | +7 min |
| Wed 7 Oct | Farnham 12:56 | −1 min | +2 min |
| Tue 6 Oct | Alton 13:17 | −1 min | — |
| Mon 5 Oct | Alton 13:18 | 0 min | +1 min |
| Sun 4 Oct | 87230 14:39 | +7 min | +7 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.