how does this plot look?

We can potentially label waking hours of countries with high population here.

India (~1,400M, UTC+5:30): 7:00–22:00 local → 1:30–16:30 UTC.
China (~1,400M, UTC+8): 7:00–22:00 local → 23:00–14:00 UTC (next day).
United States (~330M, UTC-5, Eastern Time): 7:00–22:00 local → 12:00–3:00 UTC (next day).
Indonesia (~270M, UTC+7): 7:00–22:00 local → 0:00–15:00 UTC (next day).
Pakistan (~240M, UTC+5): 7:00–22:00 local → 2:00–17:00 UTC.
Nigeria (~230M, UTC+1): 7:00–22:00 local → 6:00–21:00 UTC.
Brazil (~215M, UTC-3): 7:00–22:00 local → 10:00–1:00 UTC (next day).
Bangladesh (~170M, UTC+6): 7:00–22:00 local → 1:00–16:00 UTC.
Russia (~145M, UTC+3, Moscow): 7:00–22:00 local → 4:00–19:00 UTC.
Venezuela (~28M, UTC-4): 7:00–22:00 local → 11:00–2:00 UTC (next day).

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