Adjustment of Status Filing Charts from the Visa Bulletin

If USCIS determines there are more immigrant visas available for a fiscal year than there are known applicants for such visas, we will state on this page that you may use the Dates for Filing chart. Otherwise, we will indicate on this page that you must use the Final Action Dates chart to determine when you may file your adjustment of status application.  However, if a particular immigrant visa category is “current” on the Final Action Dates chart or the cutoff date on the Final Action Dates chart is later than the date on the Dates for Filing chart, applicants in that immigrant visa category may file using the Final Action Dates chart during that month.

https://www.uscis.gov/visabulletininfo