today when i such for avail for ald to cstm on hwh-cstm via ald for tatkal sleeper class on this site its shows avail 16 & 28 on 30/11 & 1/12 resp. but when i login to my irctc account its shows regret/wl 1 for both days. what is reason for the difference in both the info...?????????? plz let me know???????