Time Lapse Photography Cities

Camera settings for time-lapse photography question?
I'm new to this, and i've read several places to get rid of all auto functions of the camera and find proper exposure manually and just keep it at that. My question is, if you're shooting an outdoors scene, like a city sequence.. how do you go about it seeing as the night-time setting aren't going to work when the sun comes out..
The person who said you should keep it at the manually found exposure was an idiot.
First, if you're a beginner, you don't start with manual. You get rid of the auto, yes, but you either select Aperture priority or Shutter speed priority. This means that when you set the ISO and aperture/shutter speed, the camera will find the correct other setting (shutter speed or aperture, depending on which you chose).
So if you go out to shoot a city sequence at night outdoors, you set it at a high ISO and then select the aperture/shutter speed you want. The camera will find the appropriate other setting, making the exposure right.
If the sun goes up, and you do not change the aperture/shutter speed, the camera will change the other setting to get the correct exposure again. So when you have it on Aperture priority, and you do not change that or the ISO, it will automatically change the shutter speed to a higher speed (from 1/15 to 1/80, for example).
When you're an experienced photographer, you know these settings. You will be able to judge the situation, and manually set everything. Settings on aperature or shutter speed priority will allow you to learn to judge these situation. To control the shutter speed (sharpness, non-blur) and aperature (depth) yourself.
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