Govia Thameslink Railway 871P51
View line Govia Thameslink Railway
Alerts for train 871P51
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
63%
19/30 runs under 3 min
RT coverage: 30 full · 0 partial · 0 no data
On-time · 90 days
61%
55/90 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
+10min
9 in 10 runs arrive with less than this
30 days: +9 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 7 Aug Max en route +70 min · last fix heading to Portsmouth Harbour +70 min
- Sun 27 Sept Max en route +57 min · last fix heading to Portsmouth & Southsea +57 min
- Fri 23 Oct Max en route +45 min · last fix heading to Portsmouth Harbour +45 min
- Wed 2 Sept Max en route +29 min · last fix heading to Caterham +27 min
- Fri 28 Aug Max en route +22 min · last fix heading to Portsmouth Harbour +22 min
Distribution · 90 days
90 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 6% · 5
- On time 56% · 50
- 3–10 min 27% · 24
- 10–30 min 9% · 8
- 30+ min 3% · 3
On-time by weekday
- 69% M n=13
- 58% T n=12
- 46% W n=13
- 54% T n=13
- 54% F n=13
- 77% S n=13
- 69% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Mon 2 Nov | Caterham 18:33 | +5 min | +10 min |
| Sun 1 Nov | Surbiton 17:17 | −2 min | — |
| Sat 31 Oct | Haslemere 17:47 | +17 min | +17 min |
| Fri 30 Oct | Caterham 18:36 | 0 min | +3 min |
| Thu 29 Oct | Whyteleafe 18:49 | +13 min | +17 min |
| Wed 28 Oct | Caterham 18:37 | +1 min | +5 min |
| Tue 27 Oct | Caterham 18:40 | +4 min | +7 min |
| Mon 26 Oct | Caterham 18:37 | +1 min | +4 min |
| Sun 25 Oct | Caterham 20:33 | −2 min | — |
| Sat 24 Oct | Caterham 18:37 | +1 min | +7 min |
| Fri 23 Oct | Portsmouth Harbour 19:02 | +45 min | +45 min |
| Thu 22 Oct | Caterham 18:36 | +1 min | +4 min |
| Wed 21 Oct | Caterham 18:39 | +3 min | +5 min |
| Tue 20 Oct | Whyteleafe 18:39 | +3 min | +5 min |
| Mon 19 Oct | Caterham 18:36 | 0 min | +3 min |
| Sun 18 Oct | New Malden 17:08 | +3 min | +3 min |
| Sat 17 Oct | Caterham 18:35 | −1 min | +5 min |
| Fri 16 Oct | Kenley 18:36 | +1 min | +8 min |
| Thu 15 Oct | Caterham 18:36 | 0 min | +4 min |
| Wed 14 Oct | Caterham 18:37 | +1 min | +5 min |
| Tue 13 Oct | Caterham 18:35 | 0 min | +19 min |
| Mon 12 Oct | Portsmouth Harbour 18:37 | +2 min | +10 min |
| Sun 11 Oct | Whyteleafe 20:34 | −1 min | +1 min |
| Sat 10 Oct | Caterham 18:35 | −1 min | +2 min |
| Fri 9 Oct | Portsmouth & Southsea 18:38 | +3 min | +29 min |
| Thu 8 Oct | Caterham 18:35 | −1 min | +5 min |
| Wed 7 Oct | Whyteleafe 18:44 | +8 min | +11 min |
| Tue 6 Oct | Caterham 18:40 | +4 min | +7 min |
| Mon 5 Oct | Caterham 18:37 | +2 min | +7 min |
| Sun 4 Oct | Caterham 20:35 | +1 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.