Don’t go buy what the light company recommends. Go by how many hours of light and dark you need, for a photo period plant in veg and then flower.
Using LEDs you aren’t changing anything from using an HPS. Just tailored spectrums, so don't start thinking you have to change your light cycles or anything!
That’s normally 18 light and 6 dark for veg and 12 light and 12 dark for flower.
As Corey Webster said, an auto flower can put up with that, but not for a photo period in flower!