Greater Anglia 521B12
View line Greater Anglia
Alerts for train 521B12
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.
✓ Today’s run finished
Today, last fix heading to Stansted Mountfitchet at 19:47 +16 min
The mini-map returns when the train runs
On-time · 30 days
75%
21/28 runs under 3 min
RT coverage: 28 full · 0 partial · 0 no data
On-time · 90 days
75%
66/88 runs under 3 min
RT coverage: 88 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: +1 min
P90
+8min
9 in 10 runs arrive with less than this
30 days: +13 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 10 Oct Max en route +114 min · last fix heading to Stansted Mountfitchet +114 min
- Sat 24 Oct Max en route +35 min · last fix heading to Bishops Stortford +17 min
- Fri 28 Aug Max en route +20 min · last fix heading to 47346 +17 min
- Sat 31 Oct Max en route +16 min · last fix heading to Stansted Mountfitchet +16 min
- Mon 14 Sept Max en route +14 min · last fix heading to 47346 +14 min
Distribution · 90 days
88 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 5% · 4
- On time 70% · 62
- 3–10 min 16% · 14
- 10–30 min 8% · 7
- 30+ min 1% · 1
On-time by weekday
- 77% M n=13
- 69% T n=13
- 92% W n=13
- 77% T n=13
- 69% F n=13
- 58% S n=12
- 82% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 31 Oct | Stansted Mountfitchet 19:47 | +16 min | +16 min |
| Fri 30 Oct | Stansted Mountfitchet 19:35 | −1 min | +1 min |
| Thu 29 Oct | Stansted Mountfitchet 19:48 | +12 min | +15 min |
| Wed 28 Oct | Stansted Mountfitchet 19:37 | +1 min | +2 min |
| Tue 27 Oct | Stansted Mountfitchet 19:36 | 0 min | +2 min |
| Mon 26 Oct | Stansted Mountfitchet 19:41 | +5 min | +9 min |
| Sun 25 Oct | Stansted Mountfitchet 19:29 | −2 min | — |
| Sat 24 Oct | Bishops Stortford 19:38 | +17 min | +35 min |
| Fri 23 Oct | Stansted Mountfitchet 07:18 | +10 min | +13 min |
| Thu 22 Oct | Stansted Mountfitchet 19:36 | 0 min | +5 min |
| Wed 21 Oct | Stansted Mountfitchet 19:36 | 0 min | +2 min |
| Tue 20 Oct | Stansted Mountfitchet 19:37 | +1 min | +5 min |
| Mon 19 Oct | Stansted Mountfitchet 19:37 | +1 min | +3 min |
| Fri 16 Oct | Stansted Mountfitchet 07:05 | −1 min | — |
| Thu 15 Oct | Stansted Mountfitchet 07:06 | −1 min | +1 min |
| Wed 14 Oct | Stansted Mountfitchet 19:36 | 0 min | +1 min |
| Tue 13 Oct | Stansted Mountfitchet 07:05 | −2 min | — |
| Mon 12 Oct | Stansted Mountfitchet 19:36 | 0 min | +1 min |
| Sun 11 Oct | Stansted Mountfitchet 19:33 | +2 min | +2 min |
| Sat 10 Oct | Stansted Mountfitchet 21:25 | +114 min | +114 min |
| Fri 9 Oct | Stansted Mountfitchet 19:37 | +1 min | +2 min |
| Thu 8 Oct | Stansted Mountfitchet 19:36 | 0 min | +3 min |
| Wed 7 Oct | Stansted Mountfitchet 19:36 | 0 min | +1 min |
| Tue 6 Oct | Stansted Mountfitchet 19:36 | 0 min | +1 min |
| Mon 5 Oct | Stansted Mountfitchet 19:34 | −1 min | +1 min |
| Sun 4 Oct | 47346 19:32 | +2 min | +2 min |
| Sat 3 Oct | 47346 19:32 | +1 min | +3 min |
| Fri 2 Oct | 47346 19:41 | +5 min | +6 min |
| Thu 1 Oct | 47346 19:38 | +1 min | +13 min |
| Wed 30 Sept | 47346 19:36 | 0 min | +3 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.