Northern 171J21
View line Northern
Alerts for train 171J21
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
48%
14/29 runs under 3 min
RT coverage: 29 full · 0 partial · 0 no data
On-time · 90 days
60%
53/88 runs under 3 min
RT coverage: 88 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +3 min
P90
+11min
9 in 10 runs arrive with less than this
30 days: +9 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
- Thu 6 Aug Max en route +105 min · last fix heading to 31045 +105 min
- Thu 10 Sept Max en route +43 min · last fix heading to 31045 +43 min
- Fri 7 Aug Max en route +25 min · last fix heading to 31045 +23 min
- Thu 1 Oct Max en route +17 min · last fix heading to 31045 +17 min
- Wed 30 Sept Max en route +18 min · last fix heading to 31045 +17 min
Distribution · 90 days
88 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 18% · 16
- On time 42% · 37
- 3–10 min 27% · 24
- 10–30 min 10% · 9
- 30+ min 2% · 2
On-time by weekday
- 62% M n=13
- 69% T n=13
- 85% W n=13
- 58% T n=12
- 58% F n=12
- 42% S n=12
- 46% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 22 Oct | Littleborough 16:45 | +7 min | +8 min |
| Wed 21 Oct | Littleborough 16:35 | −3 min | +2 min |
| Tue 20 Oct | Littleborough 16:36 | −2 min | +2 min |
| Mon 19 Oct | Littleborough 16:36 | −2 min | +2 min |
| Sun 18 Oct | Littleborough 16:33 | +9 min | +9 min |
| Sat 17 Oct | Littleborough 16:42 | +4 min | +8 min |
| Fri 16 Oct | Littleborough 16:41 | +4 min | +5 min |
| Thu 15 Oct | Littleborough 16:39 | +2 min | +4 min |
| Wed 14 Oct | Littleborough 16:39 | +1 min | +4 min |
| Tue 13 Oct | Littleborough 16:39 | +2 min | +4 min |
| Mon 12 Oct | Littleborough 16:46 | +8 min | +9 min |
| Sun 11 Oct | Littleborough 16:42 | +2 min | +3 min |
| Sat 10 Oct | Littleborough 16:46 | +9 min | +9 min |
| Fri 9 Oct | Littleborough 16:42 | +5 min | +5 min |
| Thu 8 Oct | Littleborough 16:36 | −1 min | +3 min |
| Wed 7 Oct | Littleborough 16:37 | −1 min | +2 min |
| Tue 6 Oct | Littleborough 16:35 | −3 min | +2 min |
| Mon 5 Oct | Littleborough 16:43 | +6 min | +8 min |
| Sun 4 Oct | 31045 16:40 | 0 min | +2 min |
| Sat 3 Oct | 31045 16:42 | +3 min | +5 min |
| Fri 2 Oct | 31045 16:38 | −1 min | +4 min |
| Thu 1 Oct | 31045 16:56 | +17 min | +17 min |
| Wed 30 Sept | 31045 16:57 | +17 min | +18 min |
| Tue 29 Sept | 31045 16:46 | +7 min | +8 min |
| Mon 28 Sept | 31045 16:45 | +5 min | +7 min |
| Sun 27 Sept | 31045 16:52 | +11 min | +14 min |
| Sat 26 Sept | 31045 16:38 | 0 min | +5 min |
| Fri 25 Sept | 31045 16:44 | +6 min | +9 min |
| Thu 24 Sept | 31045 16:36 | −2 min | +1 min |
| Wed 23 Sept | 31045 16:41 | +2 min | +6 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.