South Western Railway 871W21
View line South Western Railway
Alerts for train 871W21
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
56%
14/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
62%
47/76 runs under 3 min
RT coverage: 76 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: +1 min
P90
+15min
9 in 10 runs arrive with less than this
30 days: +20 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 +41 min · last fix heading to 86980 +40 min
- Fri 25 Sept Max en route +38 min · last fix heading to Branksome +38 min
- Thu 13 Aug Max en route +37 min · last fix heading to 86980 +33 min
- Sat 1 Aug Max en route +33 min · last fix heading to 86980 +33 min
- Sat 15 Aug Max en route +26 min · last fix heading to Branksome +26 min
Distribution · 90 days
76 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 5% · 4
- On time 57% · 43
- 3–10 min 21% · 16
- 10–30 min 12% · 9
- 30+ min 5% · 4
On-time by weekday
- 46% M n=13
- 92% T n=13
- 83% W n=12
- 42% T n=12
- 62% F n=13
- 46% S n=13
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 20 Oct | Dorchester South 13:41 | +1 min | +6 min |
| Mon 19 Oct | Dorchester South 13:40 | 0 min | +4 min |
| Sat 17 Oct | Dorchester South 13:43 | +16 min | +16 min |
| Fri 16 Oct | Dorchester South 13:40 | −1 min | +15 min |
| Thu 15 Oct | Dorchester South 13:47 | +6 min | +12 min |
| Wed 14 Oct | Dorchester South 13:41 | 0 min | +12 min |
| Tue 13 Oct | Dorchester South 13:41 | 0 min | +11 min |
| Mon 12 Oct | Dorchester South 13:49 | +8 min | +14 min |
| Sat 10 Oct | Dorchester South 13:42 | −1 min | +10 min |
| Fri 9 Oct | Dorchester South 13:41 | −1 min | +5 min |
| Thu 8 Oct | Dorchester South 13:41 | 0 min | +6 min |
| Wed 7 Oct | Dorchester South 13:40 | −1 min | +2 min |
| Tue 6 Oct | Dorchester South 13:38 | −3 min | +3 min |
| Mon 5 Oct | Dorchester South 14:04 | +23 min | +29 min |
| Sat 3 Oct | 86513 12:07 | +9 min | +10 min |
| Fri 2 Oct | 86980 13:44 | +3 min | +11 min |
| Thu 1 Oct | 86980 13:49 | +7 min | +16 min |
| Wed 30 Sept | 86980 13:51 | +10 min | +17 min |
| Tue 29 Sept | 86980 13:40 | 0 min | +15 min |
| Mon 28 Sept | 86980 14:09 | +40 min | +41 min |
| Sat 26 Sept | 86980 13:44 | +1 min | +16 min |
| Fri 25 Sept | Branksome 13:12 | +38 min | +38 min |
| Thu 24 Sept | 86980 13:50 | +9 min | +16 min |
| Wed 23 Sept | 86980 13:40 | −1 min | +20 min |
| Tue 22 Sept | 86980 13:41 | 0 min | +3 min |
| Mon 21 Sept | 86980 13:58 | +17 min | +20 min |
| Sat 19 Sept | 86980 13:57 | +14 min | +19 min |
| Fri 18 Sept | 86980 13:41 | +1 min | +12 min |
| Thu 17 Sept | 86980 14:34 | +9 min | +15 min |
| Wed 16 Sept | 86980 13:40 | 0 min | +4 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.