Govia Thameslink Railway 861B17
View line Govia Thameslink Railway
Alerts for train 861B17
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
30%
8/27 runs under 3 min
RT coverage: 27 full · 0 partial · 0 no data
On-time · 90 days
36%
31/86 runs under 3 min
RT coverage: 86 full · 0 partial · 0 no data
Typical delay
+5min
Median at arrival, 90 days
30 days: +6 min
P90
+15min
9 in 10 runs arrive with less than this
30 days: +14 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 30 Jul Max en route +32 min · last fix heading to 87700 +32 min
- Sat 22 Aug Max en route +23 min · last fix heading to 87230 +22 min
- Sat 8 Aug Max en route +20 min · last fix heading to 87230 +20 min
- Thu 1 Oct Max en route +20 min · last fix heading to 87230 +19 min
- Thu 27 Aug Max en route +20 min · last fix heading to 87230 +19 min
Distribution · 90 days
86 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 35% · 30
- 3–10 min 35% · 30
- 10–30 min 28% · 24
- 30+ min 1% · 1
On-time by weekday
- 8% M n=12
- 31% T n=13
- 17% W n=12
- 25% T n=12
- 46% F n=13
- 38% S n=13
- 91% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 20 Oct | Clapham Jn. C.S. 10:28 | +5 min | +6 min |
| Mon 19 Oct | East Croydon 10:33 | +10 min | +13 min |
| Sat 17 Oct | Clapham Jn. C.S. 10:31 | +4 min | +5 min |
| Fri 16 Oct | Clapham Jn. C.S. 10:38 | +15 min | +15 min |
| Thu 15 Oct | Clapham Jn. C.S. 10:25 | +1 min | +3 min |
| Wed 14 Oct | East Croydon 10:23 | 0 min | +2 min |
| Tue 13 Oct | Clapham Jn. C.S. 10:25 | +2 min | +4 min |
| Mon 12 Oct | East Croydon 10:35 | +12 min | +13 min |
| Sun 11 Oct | — 17:33 | +5 min | +5 min |
| Sat 10 Oct | East Croydon 10:22 | −1 min | +1 min |
| Fri 9 Oct | East Croydon 10:24 | +1 min | +5 min |
| Thu 8 Oct | Clapham Jn. C.S. 10:26 | +3 min | +4 min |
| Wed 7 Oct | Clapham Jn. C.S. 10:36 | +12 min | +16 min |
| Tue 6 Oct | Clapham Jn. C.S. 10:36 | +13 min | +15 min |
| Mon 5 Oct | 87230 10:31 | +8 min | +10 min |
| Sun 4 Oct | 86445 16:00 | −1 min | — |
| Sat 3 Oct | 87230 10:30 | +7 min | +9 min |
| Fri 2 Oct | 87230 10:25 | +2 min | +6 min |
| Thu 1 Oct | 87230 10:42 | +19 min | +20 min |
| Wed 30 Sept | 87230 10:25 | +2 min | +5 min |
| Tue 29 Sept | 87230 10:38 | +15 min | +16 min |
| Mon 28 Sept | 87700 10:19 | +13 min | +13 min |
| Sat 26 Sept | 87230 10:34 | +11 min | +11 min |
| Fri 25 Sept | 87230 10:34 | +11 min | +12 min |
| Thu 24 Sept | 87230 10:26 | +3 min | +4 min |
| Wed 23 Sept | 87230 10:31 | +7 min | +9 min |
| Tue 22 Sept | 87230 10:29 | +6 min | +7 min |
| Mon 21 Sept | 87230 10:34 | +11 min | +13 min |
| Sun 20 Sept | 86445 08:46 | 0 min | +1 min |
| Sat 19 Sept | 86445 08:42 | −1 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.