There are several options, depending on what you would like to do:
- You can add the “DATE” layer to your WMS request after which you will see the dates of the scenes (note that the generated image is a mosaic, which means that different dates on different part of the image are normal).
- You can use a feature info request and point to some location. The response will contain a date field within it.
- You can use the WFS service with the same parameters as used in your WMS request (e.g. date, cloud coverage). You will get a list of features representing scenes fitting the criteria.