I would like to know duration of Tajikistan visa on Tajikistan Embassy in Beijing

Dear Sir / Madam

I am writing the email from Mongolia.
I have a question, I am going to go on International Conference on 5-6 October, Dushanbe,Tajikistan.
I will arrive on 28th Sept, 2011, Beijing. I see, I must apply for a visa before least 3 days on Tajikistan Embassy in Beijing
But i will apply for a visa on Tajikistan Embassy, 28th Sept, 2011.
Will i get a visa on 30th Sept, 2011?.
Because i see, it is going to become national celebration from 1st to 10th 2011 in China.


I am looking forward to hear from you