AgileDude is correct but I'd like to also add that you have to visit the "visabulletininfo" page to see whether you actually are allowed to file using the Dates for Filing chart. Some months, depending on your category, the Dates for Filing chart is irrelevant, and you can only file based on the Final Action chart. I think the past pattern for EB visas seems to be that you can use the Dates for Filing chart for the first few months of the fiscal year, then they switch it back to Final Action.
“There has been a steadily increasing level of Employment applicant demand since late May for adjustment of status cases filed with U.S. Citizenship and Immigration Services, and there is no indication that this increase will end. Therefore, it has been necessary to establish or retrogress many of the August Final Action Dates in an effort to hold worldwide number use within the maximum allowed under the respective FY-2019 annual limits.
The implementation of the above mentioned dates is expected to be only a temporary issue. For October, the first month of fiscal year 2020, every effort will be made to return these final action dates to those which applied for July.”
They are basically retrogressing to keep on this year cap.
Do you know what they mean by "For October, the first month of fiscal year 2020, every effort will be made to return these final action dates to those which applied for July."? Does this means that by Oct 2019 the Final action dates for EB1 will go back to July bulletin?