Govia Thameslink Railway 871C18
Alerts for train 871C18
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.
Running now · updated 10:00
Running now 0 min
Today it is running no worse than usual: typical arrival delay is +4 min; 37% of the last 30 runs arrived on time.
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
- Wed 23 Sept Max en route +69 min · last fix heading to Chichester +69 min
- Wed 26 Aug Max en route +34 min · last fix heading to Portsmouth & Southsea +34 min
- Thu 20 Aug Max en route +29 min · last fix heading to Portsmouth Harbour +29 min
- Thu 17 Sept Max en route +29 min · last fix heading to Portsmouth & Southsea +28 min
- Thu 30 Jul Max en route +27 min · last fix heading to Portsmouth Harbour +27 min
Distribution · 90 days
77 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 5% · 4
- On time 32% · 25
- 3–10 min 25% · 19
- 10–30 min 35% · 27
- 30+ min 3% · 2
On-time by weekday
- 25% M n=12
- 64% T n=11
- 27% W n=11
- 30% T n=10
- 45% F n=11
- 45% S n=11
- 27% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Wed 21 Oct | Purley 09:59 | 0 min | +1 min |
| Tue 20 Oct | Southbourne 11:17 | +1 min | +2 min |
| Mon 19 Oct | Billingshurst 10:40 | +5 min | +5 min |
| Sun 18 Oct | Arundel 11:24 | +3 min | +5 min |
| Sat 17 Oct | Portsmouth Harbour 12:01 | +9 min | +14 min |
| Fri 16 Oct | Portsmouth Harbour 11:50 | −1 min | +4 min |
| Thu 15 Oct | Portsmouth Harbour 14:50 | 0 min | +3 min |
| Wed 14 Oct | Portsmouth Harbour 12:00 | +10 min | +16 min |
| Tue 13 Oct | Portsmouth Harbour 12:04 | +13 min | +15 min |
| Mon 12 Oct | Portsmouth & Southsea 12:04 | +13 min | +15 min |
| Sun 11 Oct | Portsmouth Harbour 12:07 | +4 min | +4 min |
| Sat 10 Oct | Portsmouth Harbour 11:55 | +4 min | +8 min |
| Fri 9 Oct | Portsmouth Harbour 11:51 | 0 min | +7 min |
| Thu 8 Oct | Portsmouth Harbour 11:50 | −1 min | +1 min |
| Wed 7 Oct | Portsmouth Harbour 11:55 | +4 min | +7 min |
| Tue 6 Oct | Portsmouth Harbour 11:51 | 0 min | +4 min |
| Mon 5 Oct | Portsmouth Harbour 11:53 | +2 min | +7 min |
| Sun 4 Oct | Havant 11:54 | +5 min | +10 min |
| Sat 3 Oct | Havant 11:50 | +3 min | +6 min |
| Fri 2 Oct | Billingshurst 10:37 | +2 min | +3 min |
| Thu 1 Oct | Portsmouth Harbour 12:03 | +12 min | +18 min |
| Wed 30 Sept | Portsmouth Harbour 11:54 | +3 min | +8 min |
| Tue 29 Sept | Portsmouth Harbour 12:08 | +17 min | +18 min |
| Mon 28 Sept | Portsmouth Harbour 12:03 | +13 min | +14 min |
| Sun 27 Sept | Arundel 11:22 | +8 min | +8 min |
| Sat 26 Sept | Portsmouth Harbour 11:53 | +1 min | +3 min |
| Fri 25 Sept | Portsmouth Harbour 12:07 | +16 min | +18 min |
| Thu 24 Sept | Portsmouth Harbour 11:54 | +3 min | +5 min |
| Wed 23 Sept | Chichester 12:32 | +69 min | +69 min |
| Tue 22 Sept | Portsmouth Harbour 11:49 | −2 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.