The 12789/12790 Rameswaram-Kanyakumari-Rameswaram Tri-weekly Express will stop at Valliyoor and Nanguneri for a period of six months from January 22 to July 22, on an experimental basis.According to a Southern Railway press release, the trains will halt at these stations as per the following timings: The 12789 Rameswaram-Kanyakumari Express will reach Nanguneri at 2.35 a.m. and leave at 2.36 a.m. It will reach Valliyoor at 2.49 a.m. and leave at 2.50 a.m. The 12790 Kanyakumari-Rameswaram Express will reach Valliyoor at 10.50 p.m. and leave at 10.51 p.m. It will reach Nanguneri at 11.02 p.m. and leave at 11.03 p.m.