One thing is certain about this invite and it is as highlighted below...1.the invite follows the score performance @ the interview. 2.the date 18 - 22nd specifies the batch limit and expiration period allowed for each/dis batch 3.subsequent batches will also specify date limits 3. Soon as the required set for the first training class is attained invitations will stop for a while and continue there after 4.Have faith till it reaches ur turn!!!