To Configure Synchronizations to Run on a Schedule

Right-click the User Synchronization Service node and select Properties.
The User Synchronization Service Properties dialog opens.
Select the Schedule tab.
Click Add.
The Account Synchronization dialog opens.
Select the required day option.
Note: A Day of Week must be chosen if the option selected is either Next or Every.
In the At field, enter the required start time.
Note: If an error message occurs asking for a valid time, check the Time tab in your Regional Options to see how the time should be set (in Windows 7, go to Start > Control Panel > Region and Language > Formats tab > Additional Settings > Customize Format dialog > Time tab).
Click OK.
The Account Synchronization dialog closes and the schedule displays on the Schedule tab of the Properties dialog.
Click OK to close the Properties dialog.
Synchronizations will now occur automatically at the date and time specified in the schedule.