Setup from the Camera Menus
The camera clock can be set manually.
Procedure

01. Turn the camera on. 
 
A language-selection dialog will be displayed.
               A language-selection dialog will be displayed.

Use the multi selector and 
 button to navigate the menus. 
 
1: Power switch
2: Multi selector
3:
button (select)
                  
               1: Power switch
2: Multi selector
3:

02. Press MENU when this dialog is displayed.
               

03. Set the camera clock.
Use the multi selector and
 button to
                     set the camera clock. 
1: Select time zone
2: Select date format
               Use the multi selector and
1: Select time zone
2: Select date format

3: Select daylight saving time option
4: Set time and date (note that the camera uses a 24-hour clock)
The clock can be adjusted at any time using the Time zone and date > Date and time option in the setup menu.
               4: Set time and date (note that the camera uses a 24-hour clock)
The clock can be adjusted at any time using the Time zone and date > Date and time option in the setup menu.
               More D3400 Tips and Tricks
               
            
            
         