Knowledge Base

How To Add or Subtract Time with a DateTime Data Type

Article ID: 176043

Article Last Modified on 6/29/2004

Microsoft Visual FoxPro 3.0 Standard Edition
Microsoft Visual FoxPro 3.0b Standard Edition
Microsoft Visual FoxPro 5.0 Standard Edition
Microsoft Visual FoxPro 5.0a
Microsoft Visual FoxPro 6.0 Professional Edition
Microsoft Visual FoxPro 3.0b for Macintosh

This article was previously published under Q176043

SUMMARY

This article describes how to add or subtract time with a DateTime field. Time, in seconds, can be added or subtracted with a DateTime data type field. Time carries over from seconds to minutes to hours to days and to years. There are no adjustments in this sample for a leap year. This is an example and you may want to add additional functionality if time calculations are a large part of your application.

MORE INFORMATION

When you add or subtract time with a DateTime field, the value(s) to add or subtract will be calculated with seconds.

Example to add an hour:

   HourFromNow = Datetime() + 3600

-or-

Example to subtract a week:

   WeekAgo = Datetime() - (7*24*3600)

(c) Microsoft Corporation, 1997, All Rights Reserved. Contributions by Mike Fernald, Microsoft Corporation

Additional query words: datetime day hour minute second hh:mm:ss

Keywords: kbhowto KB176043