Are you the sun?
Break 24 hours, or the journey of the sun, into 4 parts (or 'legs'). At 6am, 4 remain, but at noon, only 3 remain.
Mornings and evenings are fine, but the benefit is greatest when the sun is high in the sky, covering everything.
Your three friends are wind, warmth, and rain, all of which are linked to the sun, and all of which benefit people.
You can spend a day however you like, and use sunlight for light, power, and warmth, among others.
You can use up the whole day, every day, because the sun will rise again the next.
Just a guess...