Add Date/Time values to the attribute table based on the computer system time

Summary

Instructions provided describe how to add data and/or time values to the attribute table based on the current computer system time and date.

Note:
Personal Geodatabase and SDE feature classes can store both date and time; however, shapefiles can only store dates. 

Information on querying date and time fields can be found in the help: ArcGIS Desktop Help Online - SQL Reference.

Procedure

1. Create a date field in the feature classes' attribute table.
   
   
   1. Right-click the layer and select Open Attribute Table.
   2. Click the Options button and select 'add field'.
   3. Enter a name for the field, select 'data' as the type, and click OK.
   
   
2. Right-click the new date field heading in the attribute table and select Calculate Values.
3. Type 'Date' in the field calculator window and click OK to run.