What is the likely start H1B date after two RFEs?

Hi,

My employer filed my H1B petition April 2017. I got the first RFE in August 2017 for which response was submitted in November 2017. A second RFE was received in January 2018 for which the response was submitted on April 2018. In this case, if the H1B petition is approved, what is my likely start date?

Thanks

The start dates for April 2017 petitions are October 2017. Since it has been crossed long time back, I would assume you can start immediately.