Here we would like to draw your attention to STZGC transaction code in SAP. As we know it is being used in the SAP BC-SRV (Basis Services / Communication Interfaces in Basis) component which is coming under BC module (BASIS).STZGC is a transaction code used for Time zones: Maintain geo.data in SAP.
It comes under the package SZTZ.
Transaction STZGC technical data table
|Purpose||Time zones: Maintain geo.data|