我给姐姐和弟弟申请 I-130。姐姐在2008年2月申请，弟弟在2010年10 月申请。昨天同时收到他们的Approve notice. 信中说：The above petition has been approved. We have sent the original visa petition to the NVC. NVC processes all approved immigrant visa petitions that need consular action. It also determines which consular post is the appropriate consulate to complete visa processing. NCB will then forward the approved petition to that consulate.
The NVC will contact the person for whom you are petitioning (beneficiary) concerning further immigrant visa processing steps.
这种情况下，还得等多长时间才会通知面试？是从Approval那天开始算排期还申请日期呢？谢谢各位的解答！！！