At first login to your MikroTik via Winbox.
Choose “Clock” from “system” menu.
In the first tab, you can set the time. Available options are defined below:
Time: the current time of the device.
Date: the current date of the device.
Time zone auto detect: the time zone is automatically set based on the IP address of the device.
Time zone name: with this option, you can define the time zone based on your requirement.
Click on apply to see the changes.
The second tab allows you to define your own time zone location based on DST.
Note: if you use a certificate in your network, set the time and date correct to avoid any problem.