Govia Thameslink Railway 871L21
Alerts for train 871L21
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.
Running now · updated 11:00
Running now +7 min
Today it is running worse than usual: typical arrival delay is +1 min; 63% of the last 30 runs arrived on time.
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 2 Oct Max en route +103 min · last fix heading to Exeter St Davids +96 min
- Sun 2 Aug Max en route +64 min · last fix heading to Feniton +64 min
- Wed 29 Jul Max en route +49 min · last fix heading to Exeter St Davids +49 min
- Fri 31 Jul Max en route +46 min · last fix heading to Exeter St Davids +46 min
- Mon 3 Aug Max en route +45 min · last fix heading to Exeter St Davids +45 min
Distribution · 90 days
90 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 2% · 2
- On time 41% · 37
- 3–10 min 29% · 26
- 10–30 min 20% · 18
- 30+ min 8% · 7
On-time by weekday
- 25% M n=12
- 77% T n=13
- 38% W n=13
- 46% T n=13
- 15% F n=13
- 54% S n=13
- 46% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 25 Oct | South Croydon 10:59 | +7 min | +17 min |
| Sat 24 Oct | Exeter St Davids 13:19 | −2 min | +12 min |
| Fri 23 Oct | Exeter St Davids 13:20 | +5 min | +9 min |
| Thu 22 Oct | Exeter St Davids 13:27 | +12 min | +20 min |
| Wed 21 Oct | Exeter St Davids 15:23 | +7 min | +11 min |
| Tue 20 Oct | Whimple 13:14 | −1 min | +10 min |
| Mon 19 Oct | Exeter St Davids 14:38 | +5 min | +6 min |
| Sun 18 Oct | New Cross Gate 11:20 | 0 min | +30 min |
| Sat 17 Oct | Exeter St Davids 13:21 | 0 min | +17 min |
| Fri 16 Oct | Exeter St Davids 13:16 | +2 min | +10 min |
| Thu 15 Oct | Exeter St Davids 13:15 | 0 min | +6 min |
| Wed 14 Oct | Exeter St Davids 13:16 | +1 min | +15 min |
| Tue 13 Oct | Exeter St Davids 14:52 | 0 min | +12 min |
| Mon 12 Oct | Exeter St Davids 13:18 | +3 min | +12 min |
| Sun 11 Oct | East Croydon 11:23 | +5 min | +5 min |
| Sat 10 Oct | Clapham Jn. C.S. 11:21 | +11 min | +11 min |
| Fri 9 Oct | Exeter St Davids 15:21 | +1 min | +9 min |
| Thu 8 Oct | Exeter St Davids 13:16 | +1 min | +10 min |
| Wed 7 Oct | Exeter St Davids 13:16 | +1 min | +6 min |
| Tue 6 Oct | Exeter St Davids 13:15 | 0 min | +18 min |
| Mon 5 Oct | Exeter St Davids 13:22 | +7 min | +91 min |
| Sun 4 Oct | Exeter St Davids 13:19 | 0 min | +19 min |
| Sat 3 Oct | Exeter St Davids 13:19 | −1 min | +6 min |
| Fri 2 Oct | Exeter St Davids 14:51 | +96 min | +103 min |
| Thu 1 Oct | Exeter St Davids 15:02 | +5 min | +7 min |
| Wed 30 Sept | Exeter St Davids 13:14 | −1 min | +9 min |
| Tue 29 Sept | Exeter St Davids 14:37 | +2 min | +3 min |
| Mon 28 Sept | Exeter St Davids 13:14 | 0 min | +5 min |
| Sun 27 Sept | 87230 11:15 | −2 min | +11 min |
| Sat 26 Sept | Exeter St Davids 13:20 | 0 min | +12 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.