To make this calendar your desktop background, please use the following instructions.
For Chrome: Right click on the photo. Select Save Image As. Save the calendar to your desktop. Find and select the file. Right click and select Set As Desktop Background.
For Internet Explorer, Edge and Firefox: Right click on the photo. Select Set As Desktop Background.
For Safari: Hold the Control button while clicking the mouse on the photo -OR- Right click on the photo. Select Set Desktop Picture.