Govia Thameslink Railway 861H21
View line Govia Thameslink Railway
Alerts for train 861H21
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
38%
9/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
30%
22/74 runs under 3 min
RT coverage: 74 full · 0 partial · 0 no data
Typical delay
+4min
Median at arrival, 90 days
30 days: +4 min
P90
+13min
9 in 10 runs arrive with less than this
30 days: +10 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
- Mon 28 Sept Max en route +33 min · last fix heading to 87700 +33 min
- Wed 12 Aug Max en route +33 min · last fix heading to 87230 +31 min
- Wed 9 Sept Max en route +18 min · last fix heading to 87901 +18 min
- Fri 14 Aug Max en route +18 min · last fix heading to 87230 +17 min
- Tue 8 Sept Max en route +16 min · last fix heading to 87230 +16 min
Distribution · 90 days
74 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 30% · 22
- 3–10 min 47% · 35
- 10–30 min 20% · 15
- 30+ min 3% · 2
On-time by weekday
- 31% M n=13
- 38% T n=13
- 46% W n=13
- 25% T n=12
- 8% F n=12
- 30% S n=10
- 0% S n=1
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Wed 28 Oct | East Croydon 11:40 | +3 min | +4 min |
| Tue 27 Oct | Clapham Jn. C.S. 11:41 | +5 min | +6 min |
| Mon 26 Oct | Clapham Jn. C.S. 11:41 | +5 min | +7 min |
| Sat 24 Oct | Clapham Jn. C.S. 11:41 | +6 min | +7 min |
| Fri 23 Oct | Earlswood (Surrey) 11:39 | +3 min | +4 min |
| Thu 22 Oct | Clapham Jn. C.S. 11:40 | +4 min | +5 min |
| Wed 21 Oct | Clapham Jn. C.S. 11:38 | +2 min | +3 min |
| Tue 20 Oct | East Croydon 11:44 | +8 min | +10 min |
| Mon 19 Oct | Clapham Jn. C.S. 11:37 | +1 min | +2 min |
| Sat 17 Oct | New Cross Gate 11:36 | 0 min | +1 min |
| Fri 16 Oct | Clapham Jn. C.S. 11:48 | +11 min | +11 min |
| Thu 15 Oct | Clapham Jn. C.S. 11:37 | +1 min | +3 min |
| Wed 14 Oct | Clapham Jn. C.S. 11:36 | 0 min | +2 min |
| Tue 13 Oct | Clapham Jn. C.S. 11:37 | +1 min | +2 min |
| Mon 12 Oct | East Croydon 11:48 | +12 min | +13 min |
| Fri 9 Oct | Clapham Jn. C.S. 11:44 | +8 min | +9 min |
| Thu 8 Oct | Clapham Jn. C.S. 11:40 | +4 min | +5 min |
| Wed 7 Oct | East Croydon 11:45 | +8 min | +9 min |
| Tue 6 Oct | East Croydon 11:38 | +2 min | +3 min |
| Mon 5 Oct | 87616 11:39 | +3 min | +5 min |
| Sat 3 Oct | 87230 11:37 | +1 min | +3 min |
| Fri 2 Oct | 87230 11:48 | +11 min | +11 min |
| Thu 1 Oct | 87230 11:40 | +4 min | +17 min |
| Wed 30 Sept | 87230 11:37 | +1 min | +2 min |
| Tue 29 Sept | 87230 11:37 | +1 min | +3 min |
| Mon 28 Sept | 87700 11:53 | +33 min | +33 min |
| Sat 26 Sept | 87230 11:50 | +13 min | +15 min |
| Fri 25 Sept | 87230 11:39 | +3 min | +4 min |
| Thu 24 Sept | 87230 11:49 | +13 min | +14 min |
| Wed 23 Sept | 87230 11:43 | +6 min | +8 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.