South Western Railway 871A27
View line South Western Railway
Alerts for train 871A27
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line South Western Railway.
The mini-map returns when the train runs
On-time · 30 days
58%
15/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
42%
36/86 runs under 3 min
RT coverage: 86 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+9min
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
- Thu 24 Sept Max en route +27 min · last fix heading to Alton +25 min
- Wed 26 Aug Max en route +22 min · last fix heading to Alton +22 min
- Tue 11 Aug Max en route +22 min · last fix heading to Alton +22 min
- Thu 30 Jul Max en route +19 min · last fix heading to Alton +19 min
- Mon 24 Aug Max en route +13 min · last fix heading to Alton +12 min
Distribution · 90 days
86 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 42% · 36
- 3–10 min 49% · 42
- 10–30 min 9% · 8
- 30+ min 0% · 0
On-time by weekday
- 58% M n=12
- 38% T n=13
- 54% W n=13
- 31% T n=13
- 54% F n=13
- 60% S n=10
- 0% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 17 Oct | Alton 12:19 | 0 min | +2 min |
| Fri 16 Oct | Alton 12:24 | +6 min | +6 min |
| Thu 15 Oct | Alton 12:18 | 0 min | +1 min |
| Wed 14 Oct | Alton 12:20 | +2 min | +4 min |
| Tue 13 Oct | Alton 12:20 | +2 min | +2 min |
| Mon 12 Oct | Alton 12:21 | +2 min | +7 min |
| Sun 11 Oct | Clapham Jn. C.S. 13:36 | +10 min | +12 min |
| Fri 9 Oct | Alton 12:21 | +3 min | +5 min |
| Thu 8 Oct | Alton 12:18 | 0 min | +1 min |
| Wed 7 Oct | Alton 12:18 | −1 min | +2 min |
| Tue 6 Oct | Alton 12:18 | −1 min | +2 min |
| Mon 5 Oct | Alton 12:18 | 0 min | +1 min |
| Sun 4 Oct | 87230 13:38 | +6 min | +6 min |
| Fri 2 Oct | Alton 12:18 | 0 min | +3 min |
| Thu 1 Oct | Alton 12:22 | +4 min | +4 min |
| Wed 30 Sept | Alton 12:18 | 0 min | +4 min |
| Tue 29 Sept | Alton 12:25 | +7 min | +7 min |
| Mon 28 Sept | Alton 12:21 | +2 min | +7 min |
| Sun 27 Sept | 87230 13:28 | +4 min | +6 min |
| Sat 26 Sept | Alton 12:22 | +3 min | +6 min |
| Fri 25 Sept | Alton 12:19 | +1 min | +1 min |
| Thu 24 Sept | Alton 14:17 | +25 min | +27 min |
| Wed 23 Sept | Alton 12:24 | +5 min | +5 min |
| Tue 22 Sept | Alton 12:19 | +1 min | +4 min |
| Mon 21 Sept | Alton 12:18 | 0 min | +1 min |
| Sun 20 Sept | 87230 13:27 | +3 min | +5 min |
| Fri 18 Sept | Alton 12:24 | +7 min | +7 min |
| Thu 17 Sept | Alton 12:24 | +6 min | +7 min |
| Wed 16 Sept | Alton 12:18 | +1 min | +4 min |
| Tue 15 Sept | Alton 12:20 | +3 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.