Recurrence pattern: every year from November 1 to November 30.

Brown Friday, observed on the day after Thanksgiving is recognized as the busiest day of the year for plumbers across the United States due to an increase in plumbing issues following Thanksgiving feasts. Households often face serious plumbing problems as grease, food scraps, and other inappropriate items are flushed down drains, leading to clogs and backups in kitchens and bathrooms. The day serves as a reminder to treat drains with care, emphasizing the importance of proper disposal methods, such as throwing grease in the trash instead of pouring it down the sink. To celebrate, individuals are encouraged to show gratitude to plumbers, check their home’s plumbing for leaks, and teach children about proper drain usage. The term “Brown Friday” originated from plumbing companies noticing a spike in emergency calls after Thanksgiving, with Roto-Rooter helping to popularize the name in the 2000s.