thanks sir but i took 17204 at 10 am from ST till ADI. in fact i reached UDN at 8.30 - a superlative performance by the LP of VTA WDM 3D between ET and UDN. We were at 10.30 at ET - about 7 hours late after which i went to sleep but when i woke up around 7.30 in morning, i got information that we had crossed NDB at around 6 am and he made us reach UDN in 2.30 hours flat which was fantastic. ET to UDN would be at least a 700 km which we covered in around 10 hrs avg speed 70 km which is surely superlative considering it is single track. so finally reached UDN - ST and boarded 17204, reached ADI, took a bus to RJT and was home at 6.30 pm - a good 42 hours after leaving PNBE....
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thanks for all your help and comments. will post some further news about the trip may be later.