Greater Anglia 521B20
View line Greater Anglia
Alerts for train 521B20
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Greater Anglia.
The mini-map returns when the train runs
On-time · 30 days
74%
20/27 runs under 3 min
RT coverage: 27 full · 0 partial · 0 no data
On-time · 90 days
66%
57/87 runs under 3 min
RT coverage: 87 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +1 min
P90
+6min
9 in 10 runs arrive with less than this
30 days: +4 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
- Sat 15 Aug Max en route +54 min · last fix heading to Stansted Mountfitchet +54 min
- Mon 14 Sept Max en route +19 min · last fix heading to 47346 +19 min
- Sun 2 Aug Max en route +18 min · last fix heading to 47346 +17 min
- Fri 2 Oct Max en route +15 min · last fix heading to 47346 +15 min
- Mon 17 Aug Max en route +14 min · last fix heading to 47346 +14 min
Distribution · 90 days
87 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 66% · 57
- 3–10 min 26% · 23
- 10–30 min 7% · 6
- 30+ min 1% · 1
On-time by weekday
- 62% M n=13
- 77% T n=13
- 62% W n=13
- 69% T n=13
- 58% F n=12
- 73% S n=11
- 58% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 22 Oct | Bishops Stortford 20:35 | +3 min | +3 min |
| Wed 21 Oct | Stansted Mountfitchet 20:31 | −1 min | +1 min |
| Tue 20 Oct | Stansted Mountfitchet 20:34 | +2 min | +5 min |
| Mon 19 Oct | Stansted Mountfitchet 20:34 | +2 min | +3 min |
| Fri 16 Oct | Stansted Mountfitchet 20:32 | 0 min | +1 min |
| Thu 15 Oct | Stansted Mountfitchet 20:35 | +3 min | +3 min |
| Wed 14 Oct | Stansted Mountfitchet 20:35 | +3 min | +5 min |
| Tue 13 Oct | Stansted Mountfitchet 20:33 | +1 min | +2 min |
| Mon 12 Oct | Stansted Mountfitchet 20:32 | −1 min | +2 min |
| Sun 11 Oct | Stansted Mountfitchet 20:31 | 0 min | +1 min |
| Sat 10 Oct | Stansted Mountfitchet 08:01 | −1 min | — |
| Fri 9 Oct | Stansted Mountfitchet 20:39 | +7 min | +7 min |
| Thu 8 Oct | Bishops Stortford 20:36 | +4 min | +4 min |
| Wed 7 Oct | Stansted Mountfitchet 20:34 | +2 min | +2 min |
| Tue 6 Oct | Stansted Mountfitchet 20:34 | +2 min | +4 min |
| Mon 5 Oct | Stansted Mountfitchet 20:34 | +2 min | +2 min |
| Sun 4 Oct | 47346 20:30 | 0 min | +5 min |
| Sat 3 Oct | 47346 20:32 | +1 min | +1 min |
| Fri 2 Oct | 47346 20:47 | +15 min | +15 min |
| Thu 1 Oct | 47346 20:34 | +2 min | +7 min |
| Wed 30 Sept | 47346 20:32 | 0 min | +4 min |
| Tue 29 Sept | 47346 20:32 | 0 min | +2 min |
| Mon 28 Sept | 47346 20:33 | +1 min | +3 min |
| Sun 27 Sept | 47346 20:36 | +5 min | +5 min |
| Sat 26 Sept | 47346 20:33 | +1 min | +3 min |
| Fri 25 Sept | 47346 20:34 | +1 min | +3 min |
| Thu 24 Sept | 47346 20:33 | +1 min | +2 min |
| Wed 23 Sept | 47346 20:36 | +4 min | +4 min |
| Tue 22 Sept | 47346 20:34 | +2 min | +5 min |
| Mon 21 Sept | 47346 20:34 | +1 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.