Your trying to save the time and the date?
or just the time?
or just the date?
Well, if you add Now() to you db, it will give you the date and time of submition.
In you db, you can select what type of information to show in the db.
If you select "Long Date" It will show:
But if you click on it, you can also see it does store the time:
Does this help?
And if that's not what you were asking, maybe you should think about what TIME is.
Time is never 00:00:00. Time goes from 12:00:00 to 1:00:00 and not to 13:00:00 nor 00:00:00. If you are manually putting in the time and date, you should look at your clock and say, well it's 11:54:00PM
Seeing how time doesn't metter too you, but it's really close.
In other words, if you are going to add the date at all, just use NOW()
You can also set it as the default text for your date/time field.