Govia Thameslink Railway 871L39
View line Govia Thameslink Railway
Alerts for train 871L39
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
60%
18/30 runs under 3 min
RT coverage: 30 full · 0 partial · 0 no data
On-time · 90 days
56%
50/90 runs under 3 min
RT coverage: 90 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +1 min
P90
+14min
9 in 10 runs arrive with less than this
30 days: +18 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
- Thu 20 Aug Max en route +111 min · last fix heading to Grateley +111 min
- Tue 3 Nov Max en route +56 min · last fix heading to Grateley +56 min
- Fri 23 Oct Max en route +48 min · last fix heading to Grateley +48 min
- Tue 11 Aug Max en route +27 min · last fix heading to 86162 +27 min
- Sat 24 Oct Max en route +26 min · last fix heading to Grateley +26 min
Distribution · 90 days
90 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 56% · 50
- 3–10 min 29% · 26
- 10–30 min 12% · 11
- 30+ min 3% · 3
On-time by weekday
- 38% M n=13
- 38% T n=13
- 69% W n=13
- 54% T n=13
- 69% F n=13
- 42% S n=12
- 77% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 6 Nov | South Croydon 15:29 | +1 min | +4 min |
| Thu 5 Nov | Clapham Jn. C.S. 15:32 | 0 min | +1 min |
| Wed 4 Nov | Clapham Jn. C.S. 15:32 | 0 min | +2 min |
| Tue 3 Nov | Grateley 16:14 | +56 min | +56 min |
| Mon 2 Nov | Grateley 15:24 | +5 min | +5 min |
| Sun 1 Nov | East Croydon 15:48 | +1 min | +2 min |
| Sat 31 Oct | Grateley 15:41 | +1 min | +2 min |
| Fri 30 Oct | South Croydon 15:40 | 0 min | +1 min |
| Thu 29 Oct | South Croydon 15:46 | +6 min | +6 min |
| Wed 28 Oct | Clapham Jn. C.S. 15:47 | +7 min | +7 min |
| Tue 27 Oct | Grateley 15:43 | +3 min | +5 min |
| Mon 26 Oct | Clapham Jn. C.S. 15:57 | +17 min | +17 min |
| Sun 25 Oct | East Croydon 15:51 | +4 min | +4 min |
| Sat 24 Oct | Grateley 15:54 | +26 min | +26 min |
| Fri 23 Oct | Grateley 16:16 | +48 min | +48 min |
| Thu 22 Oct | Clapham Jn. C.S. 15:41 | 0 min | +2 min |
| Wed 21 Oct | South Croydon 15:39 | −1 min | +3 min |
| Tue 20 Oct | Grateley 15:29 | +1 min | +2 min |
| Mon 19 Oct | Grateley 15:27 | −1 min | +1 min |
| Sun 18 Oct | New Cross Gate 15:50 | 0 min | +2 min |
| Sat 17 Oct | Clapham Jn. C.S. 15:46 | +6 min | +6 min |
| Fri 16 Oct | Clapham Jn. C.S. 15:40 | 0 min | +4 min |
| Thu 15 Oct | Clapham Jn. C.S. 15:41 | +1 min | +2 min |
| Wed 14 Oct | South Croydon 15:39 | −1 min | +2 min |
| Tue 13 Oct | Grateley 15:32 | +4 min | +4 min |
| Mon 12 Oct | Grateley 15:33 | +4 min | +5 min |
| Sun 11 Oct | Clapham Jn. C.S. 15:49 | +1 min | +2 min |
| Sat 10 Oct | Clapham Jn. C.S. 15:41 | +1 min | +2 min |
| Fri 9 Oct | South Croydon 15:42 | +2 min | +4 min |
| Thu 8 Oct | East Croydon 15:41 | +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.