Southern Railway will run special trains between Tirunelveli and Chennai Egmore.Advance reservation for the special trains commences on Wednesday. Tirunelveli-Chennai Egmore superfast special (Train no 06716) will leave Tirunelveli at 9.15pm on December 25 and reach Egmore at 9am the next day.The Chennai Egmore-Tirunelveli special train (06715) will leave Egmore at 9.5pm on December 26 and reach Tirunelveli at 9.45am the next day. The Tirunelveli-Chennai Egmore superfast special (06718) will leave Tirunelveli at 6.15pm on December 21 and reach Egmore at 7.15am the next day. The Chennai Egmore-Tirunelveli special (06717) will leave Egmore at 10.45pm on December 22 and reach Tirunelveli at 12.30pm the next day.