Yeah! the twelve months, for example. Which ones are yin, which ones are yang? if you follow the odd and even numbers, you'd say odd numbers are yang and even numbers are yin; hence month 1 is yang, month 2 is yin, etc. yet if you follow the weather patterns, month 11 is where Winter Solstice always is and month 5 where Summer Solstice always is (in the Chinese calendar, that is). So you'd say months 11-4 are yang, because after winter solstice things gets brighter and brighter (yang is related to brightness and warmth), and months 5-10 are yin, because after summer solstice things get darker and darker (yin is related to darkness and cold). Figuring out how to map the yin and yang was important because of the various political and ritual ceremonies tied to the calendar.
Yeah! the twelve months, for example. Which ones are yin, which ones are yang? if you follow the odd and even numbers, you'd say odd numbers are yang and even numbers are yin; hence month 1 is yang, month 2 is yin, etc. yet if you follow the weather patterns, month 11 is where Winter Solstice always is and month 5 where Summer Solstice always is (in the Chinese calendar, that is). So you'd say months 11-4 are yang, because after winter solstice things gets brighter and brighter (yang is related to brightness and warmth), and months 5-10 are yin, because after summer solstice things get darker and darker (yin is related to darkness and cold). Figuring out how to map the yin and yang was important because of the various political and ritual ceremonies tied to the calendar.