South Western Railway 871T37
View line South Western Railway
Alerts for train 871T37
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
62%
16/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
54%
41/76 runs under 3 min
RT coverage: 76 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +1 min
P90
+15min
9 in 10 runs arrive with less than this
30 days: +8 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 14 Aug Max en route +74 min · last fix heading to Portsmouth & Southsea +73 min
- Sat 22 Aug Max en route +56 min · last fix heading to Portsmouth Harbour +55 min
- Mon 21 Sept Max en route +48 min · last fix heading to Portsmouth Harbour +46 min
- Thu 15 Oct Max en route +33 min · last fix heading to Portsmouth Harbour +30 min
- Sat 5 Sept Max en route +20 min · last fix heading to Portsmouth Harbour +17 min
Distribution · 90 days
76 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 54% · 41
- 3–10 min 32% · 24
- 10–30 min 9% · 7
- 30+ min 5% · 4
On-time by weekday
- 77% M n=13
- 62% T n=13
- 62% W n=13
- 42% T n=12
- 54% F n=13
- 25% S n=12
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Wed 21 Oct | Portsmouth Harbour 15:26 | 0 min | +2 min |
| Tue 20 Oct | Portsmouth & Southsea 15:34 | +7 min | +15 min |
| Mon 19 Oct | Portsmouth Harbour 15:27 | 0 min | +2 min |
| Sat 17 Oct | Portsmouth Harbour 15:27 | 0 min | +7 min |
| Fri 16 Oct | Portsmouth Harbour 15:27 | 0 min | +2 min |
| Thu 15 Oct | Portsmouth Harbour 15:57 | +30 min | +33 min |
| Wed 14 Oct | Portsmouth Harbour 15:33 | +6 min | +8 min |
| Tue 13 Oct | Portsmouth Harbour 15:27 | 0 min | +2 min |
| Mon 12 Oct | Portsmouth Harbour 15:27 | 0 min | +4 min |
| Sat 10 Oct | Portsmouth Harbour 15:30 | +4 min | +5 min |
| Fri 9 Oct | Portsmouth Harbour 15:53 | +6 min | +8 min |
| Thu 8 Oct | Portsmouth Harbour 15:30 | +3 min | +4 min |
| Wed 7 Oct | Portsmouth Harbour 15:28 | +1 min | +3 min |
| Tue 6 Oct | Portsmouth Harbour 16:37 | +2 min | +2 min |
| Mon 5 Oct | Portsmouth Harbour 15:23 | +1 min | +3 min |
| Sat 3 Oct | 86243 14:59 | 0 min | +8 min |
| Fri 2 Oct | Portsmouth Harbour 15:30 | +3 min | +6 min |
| Thu 1 Oct | Portsmouth Harbour 15:42 | +15 min | +17 min |
| Wed 30 Sept | Portsmouth Harbour 15:36 | +9 min | +11 min |
| Tue 29 Sept | Portsmouth Harbour 15:27 | 0 min | +2 min |
| Mon 28 Sept | Portsmouth Harbour 15:29 | +2 min | +4 min |
| Sat 26 Sept | Portsmouth Harbour 15:34 | +7 min | +9 min |
| Fri 25 Sept | Portsmouth Harbour 15:27 | 0 min | +5 min |
| Thu 24 Sept | Portsmouth Harbour 15:27 | 0 min | +4 min |
| Wed 23 Sept | Portsmouth Harbour 15:28 | +1 min | +3 min |
| Tue 22 Sept | Portsmouth Harbour 15:27 | 0 min | +2 min |
| Mon 21 Sept | Portsmouth Harbour 16:13 | +46 min | +48 min |
| Fri 18 Sept | Portsmouth Harbour 15:42 | +15 min | +18 min |
| Thu 17 Sept | Portsmouth Harbour 15:27 | 0 min | +1 min |
| Wed 16 Sept | Portsmouth Harbour 15:30 | +4 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.