Challan status update on form 26 as

Helli All,

i have paid my taxes online from epayment website, and i am able to check challan status but the same amount is not updated under Form 26AS, please let me know how many days does it takes to update or have done any thing wrong?

first i paid 8000 on 12th of this month that is updated on form26 not again i paid some amount on 16th and till date it is not updated.

please help

regards,

Vir