2020 Sri Lankan blackouts
The 2020 Sri Lankan blackouts were a series of electrical blackouts that occurred on 17 August 2020, beginning around 12.30 pm SLST (UTC+5:30) and lasting over seven hours. The nationwide blackouts occurred due to a transmission technical failure at the Kerawalapitiya Grid-Sub station.
Source: Wikipedia — 2020 Sri Lankan blackouts (CC BY-SA 4.0)