Here we would like to draw your attention to TIMECUSTEV 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).TIMECUSTEV is a transaction code used for Symbolic Names for Dates in SAP.
It comes under the package SZTI.
Transaction TIMECUSTEV technical data table
|Purpose||Symbolic Names for Dates|