Trivia: Headcode for service of longest duration?

[wellhouse]

Waiting at Wrenbury for the delayed service to Crewe, my attention was caught by a Railhead Treatment train held at a signal before the crossing barriers were lowered.

Realtime Trains - 371C 2120 Shrewsbury Coleham Ss to Shrewsbury Coleham Ss

Realtime Trains is an independent source of live realtime running information for the Great British railway network.

www.realtimetrains.co.uk

37IC is scheduled to depart Shrewsbury Coleham Sidings 2120 yesterday (14th October) and terminate back there this afternoon at 1612, just short of 19 hours later.

How many workings (not diagrams) are there of this duration, and what is the longest?

 

[Llanigraham]

371C isn't a headcode. that would be number-letter-number-number.

 

[wellhouse]

That's how it is identified on Realtime Trains

 

[Watershed]

That's how it is identified on Realtime Trains

RTT is simply repeating what the open data feed says. Network Rail generates random, invalid headcodes for all non-passenger services (except GBRf) before they enter the feed, as this is seen as "commercially sensitive" data.

 

[Western Sunset]

The first character on these RTT "codes" are correct, though; that'll be a class 3 train.

 

[I13]

And if interested, per page 74 of the National Timetable Planning Rules, it is 3S71. If there is any other train which beats 19 hours, I imagine it will also be on one of those lists.

 

[_toommm_]

20 hours and 30 minutes for 3J11 - the RHTT from Carlisle Kingmoor:

Realtime Trains - 333H 1621 Carlisle Kingmoor Tmd(Drs) to Carlisle Kingmoor Sdg(Drs)

Realtime Trains is an independent source of live realtime running information for the Great British railway network.

www.realtimetrains.co.uk

 

[Gathursty]

20 hours and 30 minutes for 3J11 - the RHTT from Carlisle Kingmoor:

Realtime Trains - 333H 1621 Carlisle Kingmoor Tmd(Drs) to Carlisle Kingmoor Sdg(Drs)

Realtime Trains is an independent source of live realtime running information for the Great British railway network.

www.realtimetrains.co.uk

What RHTT covers Barrow to Whitehaven?

 

[30907]

What RHTT covers Barrow to Whitehaven?

None, presumably. Lack of gradients (and trees?) might influence that.