Govia Thameslink Railway 639Z81
View line Govia Thameslink Railway
Alerts for train 639Z81
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.
It does not run today
Last recorded run: Thursday 24 September +2 min
The mini-map returns when the train runs
On-time · 30 days
25%
1/4 runs under 3 min
RT coverage: 4 full · 0 partial · 0 no data
On-time · 90 days
29%
2/7 runs under 3 min
RT coverage: 7 full · 0 partial · 0 no data
Typical delay
+4min
Median at arrival, 90 days
P90
+8min
9 in 10 runs arrive with less than this
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
- Tue 22 Sept Max en route +9 min · last fix heading to Herne Hill +9 min
- Mon 21 Sept Max en route +8 min · last fix heading to Herne Hill +8 min
- Wed 12 Aug Max en route +6 min · last fix heading to Herne Hill +5 min
- Wed 23 Sept Max en route +5 min · last fix heading to Herne Hill +4 min
- Mon 10 Aug Max en route +4 min · last fix heading to Herne Hill +4 min
Distribution · 90 days
7 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 29% · 2
- 3–10 min 71% · 5
- 10–30 min 0% · 0
- 30+ min 0% · 0
On-time by weekday
- 0% M n=2
- 50% T n=2
- 0% W n=2
- 100% T n=1
- — F n=0
- — S n=0
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 24 Sept | Herne Hill 23:28 | +2 min | +3 min |
| Wed 23 Sept | Herne Hill 23:30 | +4 min | +5 min |
| Tue 22 Sept | Herne Hill 23:36 | +9 min | +9 min |
| Mon 21 Sept | Herne Hill 23:34 | +8 min | +8 min |
| Wed 12 Aug | Herne Hill 23:33 | +5 min | +6 min |
| Tue 11 Aug | Herne Hill 23:27 | −1 min | +1 min |
| Mon 10 Aug | Herne Hill 23:33 | +4 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.