Govia Thameslink Railway 871L31
View line Govia Thameslink Railway
Alerts for train 871L31
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
62%
56/90 runs under 3 min
RT coverage: 90 full · 0 partial · 0 no data
Typical delay
+2min
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
- Wed 9 Sept Max en route +25 min · last fix heading to 87230 +25 min
- Sat 8 Aug Max en route +20 min · last fix heading to 86162 +20 min
- Wed 2 Sept Max en route +17 min · last fix heading to 87230 +16 min
- Sat 17 Oct Max en route +15 min · last fix heading to Clapham Jn. C.S. +15 min
- Thu 8 Oct Max en route +14 min · last fix heading to Clapham Jn. C.S. +14 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 62% · 56
- 3–10 min 31% · 28
- 10–30 min 7% · 6
- 30+ min 0% · 0
On-time by weekday
- 75% M n=12
- 62% T n=13
- 46% W n=13
- 38% T n=13
- 62% F n=13
- 69% S n=13
- 85% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 25 Oct | South Croydon 13:49 | 0 min | +1 min |
| Sat 24 Oct | South Croydon 13:42 | 0 min | +2 min |
| Fri 23 Oct | Grateley 13:42 | +2 min | +9 min |
| Thu 22 Oct | Clapham Jn. C.S. 13:45 | +5 min | +6 min |
| Wed 21 Oct | Clapham Jn. C.S. 13:41 | +1 min | +4 min |
| Tue 20 Oct | Grateley 13:36 | +8 min | +8 min |
| Mon 19 Oct | Grateley 13:30 | +2 min | +3 min |
| Sun 18 Oct | New Cross Gate 13:52 | +1 min | +3 min |
| Sat 17 Oct | Clapham Jn. C.S. 13:56 | +15 min | +15 min |
| Fri 16 Oct | Grateley 13:29 | +1 min | +3 min |
| Thu 15 Oct | Grateley 13:42 | +2 min | +4 min |
| Wed 14 Oct | Clapham Jn. C.S. 13:42 | +2 min | +3 min |
| Tue 13 Oct | Grateley 13:33 | +5 min | +5 min |
| Mon 12 Oct | Grateley 13:34 | +6 min | +6 min |
| Sun 11 Oct | South Croydon 13:53 | +4 min | +4 min |
| Sat 10 Oct | East Croydon 13:43 | +2 min | +3 min |
| Fri 9 Oct | East Croydon 13:41 | +1 min | +2 min |
| Thu 8 Oct | Clapham Jn. C.S. 13:42 | +14 min | +14 min |
| Wed 7 Oct | East Croydon 13:43 | +3 min | +3 min |
| Tue 6 Oct | Grateley 13:30 | +2 min | +2 min |
| Mon 5 Oct | Grateley 13:26 | −1 min | +1 min |
| Sun 4 Oct | 87230 13:49 | 0 min | +2 min |
| Sat 3 Oct | 87230 13:42 | +1 min | +4 min |
| Fri 2 Oct | 87230 13:41 | +1 min | +3 min |
| Thu 1 Oct | 87230 13:44 | +4 min | +12 min |
| Wed 30 Sept | 87230 13:44 | +4 min | +6 min |
| Tue 29 Sept | 86162 13:34 | +6 min | +7 min |
| Mon 28 Sept | 86162 13:28 | −1 min | +1 min |
| Sun 27 Sept | 87230 13:49 | +2 min | +4 min |
| Sat 26 Sept | 87230 13:43 | +2 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.