Press and hold the [Ctrl] key and press the [A] key to select the folder that contains the photos to have the date changed.
Click [Edit] > [Change Date of Selected Media Files ...].
Select how to change the date.
Click [OK] and the date and time will be changed.
Right-click the photo you want to change the date for, then click [Properties].
Click the date or time of [Date taken] and enter a number, then press the [Enter] key. Date will be changed.