South Western Railway 861S12
View line South Western Railway
Alerts for train 861S12
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
86%
18/21 runs under 3 min
RT coverage: 21 full · 0 partial · 0 no data
On-time · 90 days
92%
56/61 runs under 3 min
RT coverage: 61 full · 0 partial · 0 no data
Typical delay
−1min
Median at arrival, 90 days
30 days: −1 min
P90
+2min
9 in 10 runs arrive with less than this
30 days: +4 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 9 Oct Max en route +5 min · last fix heading to Clapham Jn. C.S. +5 min
- Tue 11 Aug Max en route +6 min · last fix heading to 87286 +5 min
- Thu 17 Sept Max en route +6 min · last fix heading to 87286 +4 min
- Tue 15 Sept Max en route +4 min · last fix heading to 87286 +4 min
- Wed 29 Jul Max en route +3 min · last fix heading to Brentford +3 min
Distribution · 90 days
61 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 3% · 2
- On time 89% · 54
- 3–10 min 8% · 5
- 10–30 min 0% · 0
- 30+ min 0% · 0
On-time by weekday
- 100% M n=12
- 85% T n=13
- 92% W n=12
- 92% T n=12
- 92% F n=12
- — S n=0
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 13 Oct | Clapham Jn. C.S. 08:03 | −1 min | +1 min |
| Mon 12 Oct | Clapham Jn. C.S. 08:03 | −1 min | +1 min |
| Fri 9 Oct | Clapham Jn. C.S. 08:09 | +5 min | +5 min |
| Thu 8 Oct | Wandsworth Town 08:03 | −1 min | +3 min |
| Wed 7 Oct | Clapham Jn. C.S. 08:04 | 0 min | +1 min |
| Tue 6 Oct | Clapham Jn. C.S. 08:05 | 0 min | +3 min |
| Mon 5 Oct | 87286 08:06 | +2 min | +4 min |
| Fri 2 Oct | 87286 08:05 | +1 min | +3 min |
| Thu 1 Oct | 87286 08:03 | −1 min | +2 min |
| Wed 30 Sept | 87286 08:03 | −1 min | +1 min |
| Tue 29 Sept | 87286 08:03 | −1 min | +1 min |
| Mon 28 Sept | 87286 08:03 | −1 min | +2 min |
| Fri 25 Sept | 87286 08:03 | −1 min | +1 min |
| Thu 24 Sept | 87286 08:03 | −1 min | +1 min |
| Wed 23 Sept | 87286 08:04 | −1 min | +1 min |
| Tue 22 Sept | 87286 08:03 | −1 min | +1 min |
| Mon 21 Sept | 87286 08:06 | +1 min | +3 min |
| Fri 18 Sept | 87286 08:04 | 0 min | +2 min |
| Thu 17 Sept | 87286 08:08 | +4 min | +6 min |
| Wed 16 Sept | 87286 08:04 | 0 min | +2 min |
| Tue 15 Sept | 87286 08:08 | +4 min | +4 min |
| Mon 14 Sept | 87286 08:04 | 0 min | +3 min |
| Fri 11 Sept | 87286 08:03 | −1 min | +2 min |
| Thu 10 Sept | 87286 08:06 | +2 min | +4 min |
| Wed 9 Sept | 87286 08:04 | 0 min | +3 min |
| Tue 8 Sept | 87286 08:03 | −1 min | +2 min |
| Mon 7 Sept | 87286 08:04 | 0 min | +3 min |
| Fri 4 Sept | 87286 08:03 | −1 min | +1 min |
| Thu 3 Sept | 87286 08:06 | +2 min | +4 min |
| Wed 2 Sept | 87286 08:03 | −1 min | +1 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.