Govia Thameslink Railway 871P31
View line Govia Thameslink Railway
Alerts for train 871P31
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Govia Thameslink Railway.
The mini-map returns when the train runs
On-time · 30 days
83%
25/30 runs under 3 min
RT coverage: 30 full · 0 partial · 0 no data
On-time · 90 days
88%
79/90 runs under 3 min
RT coverage: 90 full · 0 partial · 0 no data
Typical delay
−1min
Median at arrival, 90 days
30 days: −1 min
P90
+4min
9 in 10 runs arrive with less than this
30 days: +10 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 21 Sept Max en route +93 min · last fix heading to 86334 +93 min
- Wed 23 Sept Max en route +34 min · last fix heading to Caterham +30 min
- Tue 13 Oct Max en route +24 min · last fix heading to Portsmouth Harbour +24 min
- Sat 12 Sept Max en route +16 min · last fix heading to Portsmouth Harbour +13 min
- Sun 4 Oct Max en route +12 min · last fix heading to Caterham +8 min
Distribution · 90 days
90 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 7% · 6
- On time 81% · 73
- 3–10 min 8% · 7
- 10–30 min 2% · 2
- 30+ min 2% · 2
On-time by weekday
- 77% M n=13
- 92% T n=13
- 85% W n=13
- 85% T n=13
- 100% F n=13
- 92% S n=13
- 83% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 17 Oct | Caterham 13:32 | −4 min | +2 min |
| Fri 16 Oct | Caterham 13:35 | −1 min | +1 min |
| Thu 15 Oct | Portsmouth Harbour 13:36 | 0 min | +18 min |
| Wed 14 Oct | Caterham 13:35 | −1 min | +3 min |
| Tue 13 Oct | Portsmouth Harbour 13:36 | +24 min | +24 min |
| Mon 12 Oct | Caterham 13:36 | 0 min | +6 min |
| Sun 11 Oct | Caterham 15:33 | −1 min | +21 min |
| Sat 10 Oct | Caterham 13:34 | −1 min | +1 min |
| Fri 9 Oct | Caterham 13:35 | −1 min | +2 min |
| Thu 8 Oct | Caterham 13:33 | −2 min | +6 min |
| Wed 7 Oct | Caterham 13:41 | 0 min | +10 min |
| Tue 6 Oct | Caterham 13:35 | −1 min | +17 min |
| Mon 5 Oct | Caterham 13:38 | +7 min | +7 min |
| Sun 4 Oct | Caterham 15:42 | +8 min | +12 min |
| Sat 3 Oct | Caterham 13:35 | −1 min | +5 min |
| Fri 2 Oct | Caterham 13:35 | −1 min | +8 min |
| Thu 1 Oct | Caterham 13:34 | −1 min | +15 min |
| Wed 30 Sept | Caterham 13:35 | −1 min | +8 min |
| Tue 29 Sept | Caterham 13:35 | −1 min | +4 min |
| Mon 28 Sept | Caterham 13:34 | −1 min | +10 min |
| Sun 27 Sept | Portsmouth Harbour 13:23 | +1 min | +2 min |
| Sat 26 Sept | Caterham 13:35 | −1 min | +1 min |
| Fri 25 Sept | Caterham 13:35 | −1 min | +4 min |
| Thu 24 Sept | Caterham 13:35 | −1 min | +5 min |
| Wed 23 Sept | Caterham 14:06 | +30 min | +34 min |
| Tue 22 Sept | Caterham 13:36 | +1 min | +4 min |
| Mon 21 Sept | 86334 14:29 | +93 min | +93 min |
| Sun 20 Sept | Caterham 15:32 | −1 min | +2 min |
| Sat 19 Sept | Caterham 13:36 | 0 min | +7 min |
| Fri 18 Sept | Caterham 13:35 | −1 min | +11 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.