Finding the last entry in a row with a second criteria

Hello,

I currently have a formula which finds the last date that has been entered in a row by using OFFSET, MATCH and MAX.

I would like to be add a second criteria that shows the last entry in a row that is below a certain date. In the spreadsheet that is attached, I have data in the April columns for example 4, but would only like to show the latest entry made before the end of March.

Any help would by greatly appreciated.

Thanks