I really want to draw graphs where the X-axis is date/time. For
instance, I could graph the temperature over time, and the bottom
would say "January... February... March...". I have several questions
which I just can't figure out on my own:

1. What libraries/modules should I be using to draw these graphs?

2. Is there any plotting library that understands datetime objects,
and can graph them intelligently?

If the answer to 2 is no...

3. How can I turn a datetime object (essentially six numbers) into a
single floating point number? For instance, Friday at 1 PM is 6.93,
and Friday at 3 PM is 7.71, or something like that which will be
possible to graph. Know what I mean? I need to translate/transform a
datetime object into a single number that will create a non-distorted
graph when that number is used as the X-value for an event (data
point).

4. How can I change the labels on the X-axis to say Friday, 1 PM,
instead of saying 6.93.

Thank you. Also, if I have to do 3 and 4 I will be really, really sad.

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