Here you can find the case numbers that are current and going to be called for the interview. Mean while the selected winners in the USA too can check these pages for the current case numbers and if they find that their case numbers are availalb ethen they can start to process with the USCIS office to petition their petition for their LPR status.
Case Numbers for the month of
Source: US State Department.
We don't have any connection with the US Govt or it's offices