What is the basis for the calculations?

Service Basisnatal chart — Where do the eight characters come from?It explains how the year, month, day, and time of birth become the four pillars and eight characters, and identifies which character points to you. It also discusses why it can be viewed even without knowing the exact time of birth.
Five ElementsFive Elements Strength and Strong/Weak Day PillarWe count the eight characters as five elements to see which energy is strong and which is weak. We disclose the threshold values (45%·35%) that determine the strength of the Day Stem.
Balancing ElementBalancing Element — The Energy Needed NowIf the Day Stem is strong, we consider the energy to reduce; if weak, we consider the energy to support as necessary. This explains how to choose that energy and how to handle it when balanced.
The Ten GodsThe Ten Gods — The Ten Positions Within My SajuBased on the day pillar, the remaining characters are divided into ten names. It discusses the reasons for distinguishing between regular wealth and side wealth, even if they are the same wealth element.
Relationship TableEarthly Branch Relationships — Combination, Clash, and DiscordThis is a relationship table showing how today's day pillar interacts with the natal chart. It reveals what each combination, clash, and discord is and how many points they have.
Zodiac SignWhere is the Zodiac Sign in Saju?The zodiac sign is the earthly branch of the year you were born. This explains why it is drawn from the saju year rather than the calendar year, and why those born in early January or February have the zodiac sign of the previous year.
TimeWe convert the birth time to true solar time.Standard time and the actual position of the sun differ. This addresses why the time must be adjusted according to the longitude of the birthplace to ensure the hour pillar is correct.
Today's fortuneHow does today's fortune come out?Today's day stem is compared to the natal chart to score. Thirteen suppress-and-support relations and seven earthly branch relations, along with all twenty items and their respective additions and subtractions, are fully disclosed.
Personal InformationA method that does not store the entered informationIt clarifies what it technically means that the date of birth is not recorded anywhere and what is contained in the result link.
Paid productsWhat is included in the paid reportIt clarifies what has been added to the PDF while keeping the screen unchanged. Values and contents are retrieved from the actual product settings.