白天 (bái tiān): Daytime (Noun) — Meaning & Stroke Order

I like to walk in the park during the daytime.

The sun rising is daytime, and the sun setting is nighttime—this is day and night.

He tried to make up for his daytime laziness by staying up late, but this was completely of no avail.

Won't this chaotic, day-and-night reversed work-rest schedule of yours affect your daytime efficiency?