24f51643_oard_Shortcuts___phototips_biz__Mac_OS
[Result] Jump to the next/previous whole second in timeline [Windows] Hold down the Shift key when clicking the Next/Previous Frame buttons (on either side of the Play button). [Mac OS] 
Hold down the Shift key when clicking the Next/Previous Frame buttons (on either side of the Play button)
Photoshop Keyboard Shortcuts ~ phototips.biz
Mac OS