Does New Moon Affect Stargazing After MoonSet? Referencing the following data for December 11th 2017.

https://www.timeanddate.com/moon/@4799274?month=12&amp;year=2017

To get a dark sky for stargazing does it matter if the moon is at 37.8% so long as it is below the horizon when I'm observing? 

Since the moon will be set at 1:32PM on the 11th and not rise again until 1:59AM on the 12th I would assume the moon would not affect viewing between those times. 

Furthermore is there a guideline as to how close to moonrise the moon will start to have an affect?
For most people the Moon does not significantly impact on stargazing, even when it is full, unless they are trying to view something in a direction close to the Moon. 

For people doing astrophotography, the Moon has a bigger impact since the sky is noticeably brighter and results in fainter objects not being able to be photographed.

And for astronomical observatories, some operations are impossible at worst and severely restricted at best since the telescopes are usually larger than "home" varieties and cameras much more sensitive but most noticeably a few days either side of the full moon.

So, depending on what you are actually doing, a ~38% Moon will not be a problem and if you are looking more than about 30° away from the Moon you will not even notice it.