hlo sir, i want to know about the slots details for interview

hlo sir…, i had just married on september 4 th and my hubby works at united states and i just want to live with him so that i want to apply for h4 visa. As my native is Erode Tamil Nadu so for my convinence my hubby wants me to atten the visa interview at chennai. If we apply ds-160 form in September 3rd week at chennai when will i have my interview at Chennai.

You can look at the date availability here: https://travel.state.gov/content/visas/en/general/wait-times.html/

BTW, you are allowed to appear for interview at any consulate in India and not just Chennai.