Govia Thameslink Railway 871C12
View line Govia Thameslink Railway
Alerts for train 871C12
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.
The mini-map returns when the train runs
On-time · 30 days
42%
10/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
37%
24/65 runs under 3 min
RT coverage: 65 full · 0 partial · 0 no data
Typical delay
+4min
Median at arrival, 90 days
30 days: +4 min
P90
+20min
9 in 10 runs arrive with less than this
30 days: +10 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 28 Sept Max en route +58 min · last fix heading to Billingshurst +57 min
- Wed 23 Sept Max en route +53 min · last fix heading to Gatwick Airport +49 min
- Fri 25 Sept Max en route +33 min · last fix heading to Purley +33 min
- Fri 14 Aug Max en route +29 min · last fix heading to 86334 +29 min
- Tue 11 Aug Max en route +26 min · last fix heading to Chichester +23 min
Distribution · 90 days
65 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 2% · 1
- On time 35% · 23
- 3–10 min 46% · 30
- 10–30 min 12% · 8
- 30+ min 5% · 3
On-time by weekday
- 67% M n=12
- 27% T n=11
- 36% W n=11
- 20% T n=10
- 50% F n=10
- 11% S n=9
- 50% S n=2
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Wed 21 Oct | Portsmouth Harbour 10:37 | +8 min | +11 min |
| Tue 20 Oct | Portsmouth Harbour 10:29 | +1 min | +6 min |
| Mon 19 Oct | Billingshurst 16:45 | 0 min | +6 min |
| Sat 17 Oct | Portsmouth Harbour 10:33 | +4 min | +4 min |
| Fri 16 Oct | Portsmouth Harbour 10:27 | −2 min | +3 min |
| Thu 15 Oct | Portsmouth Harbour 14:50 | +2 min | +4 min |
| Wed 14 Oct | Portsmouth Harbour 10:30 | +1 min | +7 min |
| Tue 13 Oct | Portsmouth Harbour 10:32 | +4 min | +7 min |
| Mon 12 Oct | Portsmouth & Southsea 10:28 | −1 min | +2 min |
| Sat 10 Oct | Portsmouth & Southsea 10:34 | +4 min | +7 min |
| Fri 9 Oct | Portsmouth Harbour 10:30 | +1 min | +5 min |
| Thu 8 Oct | Portsmouth & Southsea 10:33 | +4 min | +9 min |
| Wed 7 Oct | Portsmouth Harbour 10:35 | +6 min | +7 min |
| Tue 6 Oct | Portsmouth Harbour 10:30 | +1 min | +4 min |
| Mon 5 Oct | Portsmouth Harbour 10:31 | +2 min | +9 min |
| Sat 3 Oct | Havant 10:18 | +5 min | +5 min |
| Fri 2 Oct | Billingshurst 09:15 | +9 min | +10 min |
| Thu 1 Oct | Portsmouth & Southsea 10:32 | +11 min | +14 min |
| Wed 30 Sept | Portsmouth Harbour 10:30 | +1 min | +7 min |
| Tue 29 Sept | Portsmouth Harbour 10:33 | +4 min | +9 min |
| Mon 28 Sept | Billingshurst 10:03 | +57 min | +58 min |
| Sat 26 Sept | Portsmouth Harbour 10:33 | +5 min | +5 min |
| Fri 25 Sept | Purley 12:40 | +33 min | +33 min |
| Thu 24 Sept | Chichester 09:52 | +8 min | +8 min |
| Wed 23 Sept | Gatwick Airport 14:45 | +49 min | +53 min |
| Tue 22 Sept | Portsmouth Harbour 10:31 | +2 min | +7 min |
| Mon 21 Sept | Portsmouth Harbour 10:30 | +1 min | +8 min |
| Fri 18 Sept | Portsmouth Harbour 10:29 | 0 min | +6 min |
| Thu 17 Sept | Portsmouth Harbour 10:33 | +10 min | +11 min |
| Wed 16 Sept | Portsmouth Harbour 10:33 | +5 min | +8 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.