请教各位morning、afternoon、evening的时间界限

morning:The first or early part of the day, lasting from midnight to noon or from sunrise to noon.
早晨：一天之中第一个或早些时段，从子夜持续至中午或从太阳升起时持续到中午
noon:Twelve o'clock in the daytime; midday.
中午：中午十二点；正午
afternoon:The part of day from noon until sunset.
下午：一天中从中午到日落间的时段
evening:The period of decreasing daylight between afternoon and night.
傍晚：从下午到夜晚日光逐渐减弱的时期
night:The period between sunset and sunrise, especially the hours of darkness.
夜晚：从日落到日出的一段时间，尤指不见光的时间
This period considered as a unit of time:
夜间：被视作时间单位的一段时间：

发现网络上的版本比较多 有谁能详细指导一下子啊 谢谢

好专业，好详细，谢谢了。

谢谢啦！辛苦你了！

楼上的说得很详细了！

学习了，这下更清晰了！

morning:The first or early part of the day, lasting from midnight to noon or from sunrise to noon.
早晨：一天之中第一个或早些时段，从子夜持续至中午或从太阳升起时持续到中午
noon:Twelve o'clock in the daytime; midday.
中午：中午十二点；正午
afternoon:The part of day from noon until sunset.
下午：一天中从中午到日落间的时段
evening:The period of decreasing daylight between afternoon and night.
傍晚：从下午到夜晚日光逐渐减弱的时期
night:The period between sunset and sunrise, especially the hours of darkness.
夜晚：从日落到日出的一段时间，尤指不见光的时间
This period considered as a unit of time:
夜间：被视作时间单位的一段时间：

谢谢你详细的讲解！！

12点前是morning，天黑前是afternoon，天黑后是evening。