Govia Thameslink Railway 871L23
View line Govia Thameslink Railway
Alerts for train 871L23
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
55%
16/29 runs under 3 min
RT coverage: 29 full · 0 partial · 0 no data
On-time · 90 days
44%
39/88 runs under 3 min
RT coverage: 88 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+8min
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
- Wed 12 Aug Max en route +30 min · last fix heading to 87230 +30 min
- Wed 23 Sept Max en route +21 min · last fix heading to 87230 +20 min
- Sat 12 Sept Max en route +18 min · last fix heading to 87230 +18 min
- Tue 6 Oct Max en route +15 min · last fix heading to Clapham Jn. C.S. +15 min
- Mon 19 Oct Max en route +10 min · last fix heading to South Croydon +10 min
Distribution · 90 days
88 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 44% · 39
- 3–10 min 48% · 42
- 10–30 min 7% · 6
- 30+ min 1% · 1
On-time by weekday
- 42% M n=12
- 38% T n=13
- 54% W n=13
- 31% T n=13
- 62% F n=13
- 33% S n=12
- 50% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 30 Oct | Clapham Jn. C.S. 11:40 | 0 min | +1 min |
| Thu 29 Oct | South Croydon 11:44 | +4 min | +4 min |
| Wed 28 Oct | Clapham Jn. C.S. 11:42 | +2 min | +3 min |
| Tue 27 Oct | South Croydon 11:44 | +4 min | +4 min |
| Mon 26 Oct | South Croydon 11:45 | +5 min | +5 min |
| Sun 25 Oct | South Croydon 11:48 | +1 min | +2 min |
| Sat 24 Oct | Clapham Jn. C.S. 11:45 | +5 min | +5 min |
| Fri 23 Oct | Clapham Jn. C.S. 11:42 | +2 min | +3 min |
| Thu 22 Oct | Clapham Jn. C.S. 11:43 | +2 min | +3 min |
| Wed 21 Oct | Clapham Jn. C.S. 11:41 | +1 min | +3 min |
| Tue 20 Oct | Clapham Jn. C.S. 11:41 | +2 min | +2 min |
| Mon 19 Oct | South Croydon 11:50 | +10 min | +10 min |
| Sun 18 Oct | Sydenham 11:50 | 0 min | — |
| Sat 17 Oct | Clapham Jn. C.S. 11:50 | +9 min | +9 min |
| Fri 16 Oct | South Croydon 11:42 | +2 min | +3 min |
| Thu 15 Oct | Clapham Jn. C.S. 11:41 | +1 min | +1 min |
| Wed 14 Oct | Clapham Jn. C.S. 11:40 | 0 min | +2 min |
| Tue 13 Oct | Clapham Jn. C.S. 11:41 | +1 min | +2 min |
| Mon 12 Oct | Clapham Jn. C.S. 11:41 | +1 min | +2 min |
| Sun 11 Oct | Clapham Jn. C.S. 11:58 | +10 min | +10 min |
| Sat 10 Oct | East Croydon 11:48 | +8 min | +9 min |
| Fri 9 Oct | South Croydon 11:40 | −1 min | +1 min |
| Thu 8 Oct | Clapham Jn. C.S. 11:43 | +3 min | +3 min |
| Wed 7 Oct | Clapham Jn. C.S. 11:41 | +1 min | +1 min |
| Tue 6 Oct | Clapham Jn. C.S. 11:55 | +15 min | +15 min |
| Mon 5 Oct | Clapham Jn. C.S. 11:43 | +3 min | +4 min |
| Sun 4 Oct | 87230 11:48 | −1 min | +1 min |
| Sat 3 Oct | 87230 11:46 | +6 min | +6 min |
| Fri 2 Oct | 87230 11:43 | +3 min | +3 min |
| Thu 1 Oct | 87230 11:43 | +3 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.