Maybe they're working in a call center > Call centre work is typically done overnight to accommodate time zones in the US, UK, and Australia https://en.wikipe

Maybe they're working in a call center > Call centre work is typically done overnight to accommodate time zones in the US, UK, and Australia https://en.wikipedia.org/wiki/Call_centre_industry_in_India https://en.wikipedia.org/wiki/Call_centre_industry_in_India