https://en.wikipedia.org/wiki/Nyepi
"Nyepi (Balinese: ᬜᬾᬧᬶ ), also known as Day of Silence, is a Balinese holiday held every Isakawarsa ("new year" ) according to the Balinese calendar, and it can be traced as far back as 78 A.D.[1]
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Observed from 6 a.m. until 6 a.m. the following day, Nyepi is dedicated to self-reflection, fasting, and meditation. During this period, activities that may interfere with this purpose are prohibited, including work, travel, and entertainment or leisure activities. The use of fire and artificial lighting is restricted, resulting in minimal electricity use, and residents and visitors are required to remain indoors across the island of Bali.[7]
As Bali's usually bustling streets and roads become empty during Nyepi, there is little or no noise from TVs and radios, and few signs of activity are visible inside homes. The only people to be seen outdoors are the pecalang, traditional security men who patrol the streets to ensure the prohibitions are followed.[8]
Although Nyepi is primarily a Hindu holiday, non-Hindu residents and tourists are not exempt from the restrictions. Although they are free to do as they wish inside hotels, no one is allowed onto beaches or streets, and the only airport in Bali remains closed for the entire day. Tourists who violate these rules can face deportation.[9]".... (more)