Sentinel 5P harpmerge tool not picking same date Multiple file


I am trying to harpmerge 2 swath (OFFL) files for same day but the syntax provided in RUS Copernicus Webinar and Air Quality Monioring PDF Helpfile (https://rus-copernicus.eu/portal/wp-content/uploads/library/education/training/ATMO01_AirQuality_Monitoring.pdf) is not working for me.

Need Urgent help.

Regards