i answered the questions on the calculator link above again, in order to do a basic check on my thinking here. but this time i answered the questions imagining that i was my best friend, who was born a few days after me (around jan 27, 1971- after the lunar new year) and she is 44 solar korean age and 44 lunar korean age for every single day of 2014.
the above conclusions also seem to jibe with the general reasoning stated in this video and elsewhere that:
what koreans are counting when they count age is not the length of your lifespan but rather the years you've seen/ touched/ lived through. therefore, if i am counting lunar years, i will get different answers if i am born before the lunar new year, depending on what part of the year it is.
thus, on jan. 1 2014, my actual international age was 42. my korean lunar AND solar ages was 44 on the same day, jan. 1, 2014. BUT after the lunar new year (early feb, 2014), i had ALSO hit my birthday, so my actual international age was 43. but at that point my korean solar age was still 44, and my korean lunar age was, and is for the rest of that calendar year, 45.
and with three ways of reckoning things (solar korean, lunar korean, and international), all the people born before the lunar new years have 4 different ages in one calendar year (for me this year, i was 42, 43, 44, and 45). all those born after the lunar new year are three different ages (my friend in example above) was 42, 43, and 44.
if this is not the correct way of reckoning things (and i do think it is actually correct), please inform me what i have gotten wrong.
i suspect that perhaps 100 years ago, when korea was mainly a farming society, that they only used lunar years, when reckoning their age, but that is an open question which i am certainly willing to discuss.