What is the meaning of "DIFFERENT ADTF" in railway reservation????

Question

You Queried For Train Number Train Name Date (DD-MM-YYYY) Source Station Destination Station Quota Code

5657 KANCHANJANGA EX 26-12-2006 SEALDAH NEW JALPAIGURI GENERAL

S.No. Date (DD-MM-YYYY) Class - SL Class -3A

1 26-12-2006 RAC 10/RAC 6 WL 7/WL 2

2 27-12-2006 DIFFERENT ADTF DIFFERENT ADTF

what does this mean??????

Answer 1

 Arrival Dparture Time Frame

Answer 2

ADTF means arrival departure time frame... It is been used when the railway timetable changes