Gatherings of multiple households are a significant contributor to increased transmission of COVID-19. Gatherings of different households for non-essential activities are prohibited between 10 pm and 5 am. When people mix from different households it poses a higher risk of transmission and spread of COVID-19. The likelihood of transmission and spread increases with laughing, singing, loud talking and difficulty maintaining physical distance. The latest guidance on Gatherings is available here:
https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/COVID-19/Guidance-for-the-Prevention-of- COVID-19-Transmission-for-Gatherings-November-2020.aspx