Is bad if my auto outdoor seed receive less than 8hrs of light?

Thank you for your time to answer guys!

That's fine. There's so much indirect light outside, the plant won't die due to lack of direct sunlight. I have friends that grow under forest canopies and their plants get 1-2 hours of direct sunlight a day. Their plants still produce nice buds and make it through the whole cycle. Is it optimized? No. Will it provide sustenance for the plant and decent smoke for you? Definitely.

it's not great, but it won't hurt it. it got less energy that day... a very cloudy day might be similar. it depends on region too... the sun is much stronger in some regions... you can reference a regional DLI may for the time of year -- any good source will have 12 months of maps for your area as it changes with seasons too... the world revolves on a tilted axis relative to the sun. if in a high dli area, it may have gotten a good amount even with 8 hours, but most likely was a bit short that day.

Your plant can calmly finish its life cycle. The more hours of direct light it gets, the more it will favor the growth of the plant. Don't worry, your plant is going to live.