The Andhra Smartha tradition follows tithis and the Sri Vaishnava tradition follows nakshatras for festivals, like tamilians.
So while we perform saraswati puja on saptami (today), they would perform it on Moola Nakshatram which is tomorrow, according to my calendar.
One each day of the Devi Navaratris – Aswiyuja Suddha Padyami to Vijaya Dasami, a different form of the devi is worshipped in Andhra.
I found this blog which tells you what prasadam to make on each day : http://plantainleaf.blogspot.com/2009/09/seventh-day-of-navaratri-maha-saraswati.html and which form of devi to worship in each day.
Here are some pictures of which Devi is to be worshipped on which day!
SWARNA KAVACHALANKRUTA KANAKA DURGA DEVI on pADyami (pratipada – the first day)
BALATRIPURA SUNDARI on vidiya (dvitiya), the second day.
GAYATRI DEVI on tadiya, trutiya, the third day
ANNAPURNA DEVI on caviti, chaturthi, the fourth day
LALITA TRIPURA SUNDARI on panchami, fifth day
MAHALAKSHMI DEVI on shashthi, the sixth day
SARASWATI DEVI on saptami, the seventh day
DURGA DEVI on ashtami, eighth day
MAHISHASURA MARDINI on mahanavani, ninth day (aayudha puja day)
(Actually in our house we worship all the three devis, Lakshmi, Saraswathi and Durga on this day, but the mahiSAsura mardini worship on this day at the temple, explains my powerful urge to squash injustice, this being my birthday, it must be the cause of my fierceness!)
SRI RAJARAJESWARI DEVI on Vijaya Dasimi, the tenth day
Authorship and Copyright Notice : All Rights Reserved : Satya Sarada Kandula : All Rights for Sourced MAterial Vest with the Source