Govia Thameslink Railway 861B27
View line Govia Thameslink Railway
Alerts for train 861B27
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
22%
6/27 runs under 3 min
RT coverage: 27 full · 0 partial · 0 no data
On-time · 90 days
19%
15/79 runs under 3 min
RT coverage: 79 full · 0 partial · 0 no data
Typical delay
+6min
Median at arrival, 90 days
30 days: +5 min
P90
+21min
9 in 10 runs arrive with less than this
30 days: +13 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
- Fri 21 Aug Max en route +36 min · last fix heading to 87700 +36 min
- Mon 17 Aug Max en route +35 min · last fix heading to 87700 +35 min
- Sat 17 Oct Max en route +35 min · last fix heading to Clapham Jn. C.S. +34 min
- Fri 23 Oct Max en route +29 min · last fix heading to Clapham Jn. C.S. +29 min
- Fri 28 Aug Max en route +27 min · last fix heading to 87700 +27 min
Distribution · 90 days
79 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 18% · 14
- 3–10 min 57% · 45
- 10–30 min 20% · 16
- 30+ min 4% · 3
On-time by weekday
- 8% M n=13
- 0% T n=13
- 23% W n=13
- 31% T n=13
- 23% F n=13
- 17% S n=12
- 100% S n=2
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 30 Oct | East Croydon 13:01 | +8 min | +8 min |
| Thu 29 Oct | Clapham Jn. C.S. 12:57 | +3 min | +6 min |
| Wed 28 Oct | Clapham Jn. C.S. 13:01 | +8 min | +9 min |
| Tue 27 Oct | Clapham Jn. C.S. 13:02 | +8 min | +10 min |
| Mon 26 Oct | Clapham Jn. C.S. 13:01 | +8 min | +9 min |
| Sun 25 Oct | Poole 13:42 | +1 min | +1 min |
| Sat 24 Oct | East Croydon 12:58 | +5 min | +7 min |
| Fri 23 Oct | Clapham Jn. C.S. 13:22 | +29 min | +29 min |
| Thu 22 Oct | Earlswood (Surrey) 12:58 | +5 min | +6 min |
| Wed 21 Oct | Clapham Jn. C.S. 12:56 | +3 min | +4 min |
| Tue 20 Oct | East Croydon 13:04 | +11 min | +11 min |
| Mon 19 Oct | Clapham Jn. C.S. 12:58 | +5 min | +6 min |
| Sat 17 Oct | Clapham Jn. C.S. 13:31 | +34 min | +35 min |
| Fri 16 Oct | East Croydon 12:53 | 0 min | +1 min |
| Thu 15 Oct | East Croydon 12:54 | +1 min | +2 min |
| Wed 14 Oct | Earlswood (Surrey) 12:54 | +1 min | +3 min |
| Tue 13 Oct | East Croydon 13:01 | +8 min | +8 min |
| Mon 12 Oct | Clapham Jn. C.S. 12:57 | +3 min | +5 min |
| Sat 10 Oct | East Croydon 13:09 | +16 min | +17 min |
| Fri 9 Oct | Clapham Jn. C.S. 13:02 | +8 min | +8 min |
| Thu 8 Oct | Clapham Jn. C.S. 12:57 | +4 min | +6 min |
| Wed 7 Oct | East Croydon 12:53 | 0 min | +3 min |
| Tue 6 Oct | Clapham Jn. C.S. 12:57 | +4 min | +5 min |
| Mon 5 Oct | East Croydon 12:46 | +4 min | +4 min |
| Sat 3 Oct | 87230 12:58 | +5 min | +7 min |
| Fri 2 Oct | 87230 12:58 | +5 min | +6 min |
| Thu 1 Oct | 87230 12:53 | 0 min | +2 min |
| Wed 30 Sept | 87230 13:01 | +8 min | +8 min |
| Tue 29 Sept | 87230 12:57 | +4 min | +6 min |
| Mon 28 Sept | 87700 13:12 | +21 min | +21 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.