The experiment date includes the creation and last modified date. These dates cannot be changed, since they signify a record of the change that has been made in sciNote (i.e. audit trail).
We are aware that this is not practical when you want to create an experiment that has already began or was done before you actually started using sciNote for data recording.
Nevertheless, you can edit the experiment name by adding the date before the name (exp. “17.7.2017 - Protein purification”). This allows you to sort the experiments chronologically by choosing the sort action From A to Z in the drop-down menu of Sort by button (on the left upper corner on the Project's experiments overview).