Ubuntu - MySQL - convert_tz returns null

In Ubuntu, convert_tz function in MySQL was returning NULL for me.

To handle this, I used this solution mentioned here. PFB the steps for quick reference.

• Go to Terminal
• Execute the command
  

  mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql

• Now, convert_tz will return a non NULL value