South Western Railway 871P37
Alerts for train 871P37
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.
Running now · updated 14:15
Running now 0 min
Today it is running no worse than usual: typical arrival delay is 0 min; 83% of the last 30 runs arrived on time.
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 23 Oct Max en route +72 min · last fix heading to Portsmouth & Southsea +72 min
- Fri 25 Sept Max en route +41 min · last fix heading to Portsmouth Harbour +24 min
- Fri 18 Sept Max en route +17 min · last fix heading to Portsmouth Harbour +17 min
- Mon 5 Oct Max en route +16 min · last fix heading to Portsmouth & Southsea +16 min
- Thu 10 Sept Max en route +19 min · last fix heading to Caterham +14 min
Distribution · 90 days
87 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 2% · 2
- On time 83% · 72
- 3–10 min 6% · 5
- 10–30 min 8% · 7
- 30+ min 1% · 1
On-time by weekday
- 85% M n=13
- 92% T n=13
- 92% W n=13
- 85% T n=13
- 75% F n=12
- 92% S n=13
- 70% S n=10
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 29 Oct | Petersfield 14:14 | 0 min | +4 min |
| Wed 28 Oct | Caterham 15:05 | −1 min | +17 min |
| Tue 27 Oct | Caterham 15:05 | −1 min | +2 min |
| Mon 26 Oct | Caterham 15:05 | −1 min | +4 min |
| Sun 25 Oct | Whyteleafe 17:03 | 0 min | +2 min |
| Sat 24 Oct | Caterham 15:05 | −1 min | +5 min |
| Fri 23 Oct | Portsmouth & Southsea 16:09 | +72 min | +72 min |
| Thu 22 Oct | Portsmouth Harbour 15:05 | −1 min | +2 min |
| Wed 21 Oct | Whyteleafe 15:06 | +1 min | +6 min |
| Tue 20 Oct | Caterham 15:08 | +11 min | +18 min |
| Mon 19 Oct | Portsmouth Harbour 15:05 | −1 min | +4 min |
| Sun 18 Oct | Portsmouth Harbour 14:35 | +3 min | +3 min |
| Sat 17 Oct | Whyteleafe 15:06 | 0 min | +17 min |
| Fri 16 Oct | Whyteleafe 15:05 | −1 min | +3 min |
| Thu 15 Oct | Portsmouth & Southsea 15:06 | 0 min | +7 min |
| Wed 14 Oct | Portsmouth & Southsea 15:06 | 0 min | +2 min |
| Tue 13 Oct | Caterham 15:05 | 0 min | +2 min |
| Mon 12 Oct | Whyteleafe 15:06 | 0 min | +6 min |
| Sun 11 Oct | Caterham 17:05 | +1 min | +3 min |
| Sat 10 Oct | Caterham 15:04 | −1 min | +2 min |
| Fri 9 Oct | Portsmouth Harbour 15:22 | 0 min | +1 min |
| Thu 8 Oct | Caterham 15:05 | −1 min | +8 min |
| Wed 7 Oct | Caterham 15:04 | −1 min | +1 min |
| Tue 6 Oct | Caterham 15:18 | 0 min | +3 min |
| Mon 5 Oct | Portsmouth & Southsea 15:13 | +16 min | +16 min |
| Sun 4 Oct | Caterham 17:02 | −1 min | +3 min |
| Sat 3 Oct | Caterham 15:05 | −1 min | +6 min |
| Fri 2 Oct | Caterham 15:05 | −1 min | +2 min |
| Thu 1 Oct | Portsmouth Harbour 15:08 | +11 min | +11 min |
| Wed 30 Sept | Caterham 15:05 | −1 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.