Request of Sentinel2 data

dear all
i have a problem
i am a phd student of remote sensing and did the field work and collected field data in 15 Sep 2018 at the same time with satellite launch
but there is not the sentinel -2 image in this day in scihub.copernicus.eu!!!
why??
how could i solve my problem?
best regards

you can check the KML file in the archive if there is an acquisition in your area on the respective day: https://sentinel.esa.int/web/sentinel/missions/sentinel-2/acquisition-plans/archive