Northern 551Y36
View line Northern
Alerts for train 551Y36
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Northern.
The mini-map returns when the train runs
On-time · 30 days
41%
12/29 runs under 3 min
RT coverage: 29 full · 0 partial · 0 no data
On-time · 90 days
61%
51/83 runs under 3 min
RT coverage: 83 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +3 min
P90
+6min
9 in 10 runs arrive with less than this
30 days: +6 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 17 Aug Max en route +19 min · last fix heading to 27272 +19 min
- Mon 12 Oct Max en route +18 min · last fix heading to Langley Mill +11 min
- Fri 30 Oct Max en route +9 min · last fix heading to Langley Mill +9 min
- Thu 10 Sept Max en route +9 min · last fix heading to 27272 +9 min
- Fri 9 Oct Max en route +8 min · last fix heading to Langley Mill +8 min
Distribution · 90 days
83 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 5% · 4
- On time 57% · 47
- 3–10 min 36% · 30
- 10–30 min 2% · 2
- 30+ min 0% · 0
On-time by weekday
- 38% M n=13
- 69% T n=13
- 69% W n=13
- 77% T n=13
- 75% F n=12
- 33% S n=9
- 60% S n=10
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 5 Nov | Langley Mill 23:14 | +1 min | +1 min |
| Wed 4 Nov | Langley Mill 23:29 | +3 min | +3 min |
| Tue 3 Nov | Langley Mill 23:24 | 0 min | +1 min |
| Mon 2 Nov | Langley Mill 23:29 | +3 min | +3 min |
| Sun 1 Nov | Langley Mill 23:34 | +1 min | +3 min |
| Sat 31 Oct | Langley Mill 23:29 | +3 min | +5 min |
| Fri 30 Oct | Langley Mill 23:43 | +9 min | +9 min |
| Thu 29 Oct | — 23:35 | +1 min | +1 min |
| Wed 28 Oct | Langley Mill 23:38 | +3 min | +3 min |
| Tue 27 Oct | Langley Mill 23:38 | +4 min | +4 min |
| Mon 26 Oct | Langley Mill 23:38 | +4 min | +4 min |
| Sun 25 Oct | Langley Mill 23:47 | +4 min | +9 min |
| Sat 24 Oct | Langley Mill 23:29 | +3 min | +4 min |
| Fri 23 Oct | Langley Mill 23:33 | −1 min | +1 min |
| Thu 22 Oct | Langley Mill 23:34 | 0 min | +1 min |
| Wed 21 Oct | — 23:35 | 0 min | +1 min |
| Tue 20 Oct | Langley Mill 23:38 | +3 min | +4 min |
| Mon 19 Oct | Langley Mill 23:38 | +4 min | +4 min |
| Sun 18 Oct | Langley Mill 23:46 | +3 min | +4 min |
| Sat 17 Oct | Langley Mill 23:30 | +4 min | +7 min |
| Fri 16 Oct | — 23:35 | +1 min | +1 min |
| Thu 15 Oct | Langley Mill 23:41 | +6 min | +6 min |
| Wed 14 Oct | Langley Mill 23:35 | +1 min | +2 min |
| Tue 13 Oct | Langley Mill 23:34 | 0 min | +3 min |
| Mon 12 Oct | Langley Mill 23:45 | +11 min | +18 min |
| Sun 11 Oct | — 23:41 | −1 min | — |
| Sat 10 Oct | Langley Mill 23:32 | +5 min | +5 min |
| Fri 9 Oct | Langley Mill 23:42 | +8 min | +8 min |
| Thu 8 Oct | Langley Mill 23:35 | 0 min | +2 min |
| Wed 7 Oct | Langley Mill 23:35 | +1 min | +1 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.