Times and time zones
You enter new times by turning on the checkbox to edit the time in the format defined by your Windows™ Regional Options. Alternatively you can turn it off to specify a blank time (even though a time might be displayed).
Procedure
To edit a time:
- Click a part of the time to edit it. 
- Enter the time by using the number keys or the up and down arrow keys. To edit AM or PM, click it and then press the A key to change to AM or P to change to PM. - On saving, the time might be changed for storing and display. For example, 9:08 AM might become 09:08:00. - Time zones are used along with date and time type fields. 
