Does theta decay overnight?

Could you please clarify for me whether theta decay occurs overnight? I've heard conflicting information about this, and I'm trying to get a clear understanding of the process. Is it a gradual decline that takes place throughout the day, or does it occur primarily during overnight hours? Additionally, could you explain what factors might influence the rate of theta decay? I'm particularly interested in understanding how market conditions and volatility might affect this process. Thank you for your assistance in clarifying this matter for me.