Govia Thameslink Railway 871R51
View line Govia Thameslink Railway
Alerts for train 871R51
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%
15/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
68%
51/75 runs under 3 min
RT coverage: 75 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +2 min
P90
+7min
9 in 10 runs arrive with less than this
30 days: +6 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 3 Aug Max en route +54 min · last fix heading to 87230 +54 min
- Thu 3 Sept Max en route +20 min · last fix heading to 87230 +18 min
- Tue 15 Sept Max en route +17 min · last fix heading to 87230 +14 min
- Fri 16 Oct Max en route +16 min · last fix heading to Clapham Jn. C.S. +13 min
- Mon 10 Aug Max en route +19 min · last fix heading to 87230 +13 min
Distribution · 90 days
75 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 4% · 3
- On time 64% · 48
- 3–10 min 24% · 18
- 10–30 min 7% · 5
- 30+ min 1% · 1
On-time by weekday
- 73% M n=11
- 54% T n=13
- 85% W n=13
- 62% T n=13
- 50% F n=12
- 85% S n=13
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 17 Oct | — 18:43 | −1 min | — |
| Fri 16 Oct | Clapham Jn. C.S. 19:40 | +13 min | +16 min |
| Thu 15 Oct | Clapham Jn. C.S. 19:33 | +6 min | +8 min |
| Wed 14 Oct | East Croydon 19:28 | +1 min | +3 min |
| Tue 13 Oct | East Croydon 19:29 | +1 min | +4 min |
| Mon 12 Oct | Clapham Jn. C.S. 19:27 | 0 min | +3 min |
| Sat 10 Oct | Clapham Jn. C.S. 19:28 | +1 min | +3 min |
| Fri 9 Oct | Clapham Jn. C.S. 19:30 | +3 min | +6 min |
| Thu 8 Oct | East Croydon 19:29 | +2 min | +6 min |
| Wed 7 Oct | Clapham Jn. C.S. 19:29 | +2 min | +4 min |
| Tue 6 Oct | East Croydon 19:28 | +1 min | +3 min |
| Mon 5 Oct | East Croydon 19:31 | +5 min | +7 min |
| Sat 3 Oct | 87230 19:28 | +1 min | +3 min |
| Fri 2 Oct | 87230 19:30 | +3 min | +5 min |
| Thu 1 Oct | 87230 19:29 | +2 min | +4 min |
| Wed 30 Sept | 87230 19:29 | +2 min | +5 min |
| Tue 29 Sept | 87230 19:35 | +7 min | +12 min |
| Sat 26 Sept | 87230 19:28 | +1 min | +3 min |
| Fri 25 Sept | 87230 19:30 | +3 min | +7 min |
| Thu 24 Sept | 87230 19:27 | 0 min | +3 min |
| Wed 23 Sept | 87230 19:29 | +2 min | +4 min |
| Tue 22 Sept | 87230 19:31 | +4 min | +5 min |
| Mon 21 Sept | 87230 19:29 | +2 min | +4 min |
| Sat 19 Sept | 87230 19:32 | +4 min | +6 min |
| Fri 18 Sept | 87230 19:27 | 0 min | +3 min |
| Thu 17 Sept | 87230 19:30 | +3 min | +5 min |
| Wed 16 Sept | 87230 19:26 | −1 min | +5 min |
| Tue 15 Sept | 87230 19:41 | +14 min | +17 min |
| Mon 14 Sept | 87230 19:27 | 0 min | +3 min |
| Sat 12 Sept | 87230 19:28 | +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.