How to enable Automatic time zone update in Samsung Galaxy Grand 2(SM-G7102)?

a). Tap on Apps icon as shown below.

b). Now, Tap on Settings icon then tap on General as shown below.

c). Now, tap on Date and time option as shown below.

d). Tap on the Check box available next to Automatic time zone.

e). Now, Automatic time zone is enabled.

NOTE : By enabling Automatic time zone the Select time zone option will be disabled.