Govia Thameslink Railway 879J20
View line Govia Thameslink Railway
Alerts for train 879J20
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
54%
14/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
49%
37/75 runs under 3 min
RT coverage: 75 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+12min
9 in 10 runs arrive with less than this
30 days: +11 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 4 Sept Max en route +44 min · last fix heading to 45150 +43 min
- Sat 5 Sept Max en route +21 min · last fix heading to 45150 +19 min
- Wed 26 Aug Max en route +18 min · last fix heading to 45150 +16 min
- Thu 20 Aug Max en route +16 min · last fix heading to 45150 +16 min
- Tue 1 Sept Max en route +16 min · last fix heading to 45150 +14 min
Distribution · 90 days
75 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 4% · 3
- On time 45% · 34
- 3–10 min 28% · 21
- 10–30 min 21% · 16
- 30+ min 1% · 1
On-time by weekday
- 42% M n=12
- 67% T n=12
- 62% W n=13
- 38% T n=13
- 38% F n=13
- 50% S n=12
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 16 Oct | Huntingdon 11:19 | +1 min | +6 min |
| Thu 15 Oct | Huntingdon 11:19 | +2 min | +6 min |
| Wed 14 Oct | Huntingdon 11:19 | +2 min | +2 min |
| Tue 13 Oct | Huntingdon 11:26 | +9 min | +18 min |
| Mon 12 Oct | Huntingdon 11:21 | +4 min | +7 min |
| Sat 10 Oct | Huntingdon 11:30 | +13 min | +26 min |
| Fri 9 Oct | Huntingdon 11:22 | +5 min | +33 min |
| Thu 8 Oct | Huntingdon 11:19 | +1 min | +8 min |
| Wed 7 Oct | Huntingdon 11:29 | +12 min | +14 min |
| Tue 6 Oct | Huntingdon 11:16 | −1 min | +3 min |
| Mon 5 Oct | 45150 11:18 | +1 min | +6 min |
| Sat 3 Oct | Alexandra Palace 10:06 | +6 min | +7 min |
| Fri 2 Oct | 45150 11:16 | −2 min | +3 min |
| Thu 1 Oct | 45150 11:18 | 0 min | +5 min |
| Wed 30 Sept | 45150 11:16 | −1 min | +6 min |
| Tue 29 Sept | 45150 11:18 | +1 min | +4 min |
| Mon 28 Sept | 45150 11:19 | +2 min | +4 min |
| Sat 26 Sept | Alexandra Palace 10:00 | 0 min | +5 min |
| Fri 25 Sept | 45150 11:23 | +6 min | +9 min |
| Thu 24 Sept | 45150 11:19 | +1 min | +2 min |
| Wed 23 Sept | 45150 13:22 | +3 min | +72 min |
| Tue 22 Sept | 45150 11:21 | +4 min | +5 min |
| Mon 21 Sept | 45150 11:21 | +3 min | +4 min |
| Sat 19 Sept | 45150 11:28 | +11 min | +12 min |
| Fri 18 Sept | 45150 11:19 | +1 min | +5 min |
| Thu 17 Sept | 45150 11:29 | +11 min | +14 min |
| Wed 16 Sept | 45150 11:19 | +2 min | +5 min |
| Tue 15 Sept | 45150 11:30 | +12 min | +25 min |
| Mon 14 Sept | 45150 11:30 | +12 min | +16 min |
| Sat 12 Sept | 45150 11:16 | 0 min | +2 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.