Does end date of 1041 short return have to be the end of a month

I was planning on end date of 7/31/22 for 1041 short return, but the final legal fees did not post as paid from the last of the IOLTA until August 2, 2200.  This is the last thing I have to do to close the estate.  I know there is no more income coming and all distributions are complete.  The estate is complete.  Does the return now have to go to August 31?  Do  I have to wait until September 1 2022 to sign and date and mail this return or can I date it earlier and mail it?