There is nothing like Cycle for Certification Exams. They are held all the year around. You need to contact SAP India for the same. The eMail ID is education.india (at) sap.com
If you are asking about the Certifications that are offered ate the reduced rates, this happens with SAP Teched in October November every year. The dates for 2009 are yet not available, you can visit this page ([http://sapteched.com/india/]) and add your eMail ID to the mailing list to get the updates.
Basically remember to check the criteria and make sure you meet all of them. If you want to know more check this page [http://www.sap.com/services/education/certification/index.epx]
Hope this helps