The two characters of the day someone was born. They come round every sixty days, and they are the third of the four pillars.
What it is made of
The stem Jeong (정, 丁) is the yin of Fire.
The branch Sa (사, 巳) is the yin of Fire.
Sa carries Byeong (병, 丙), Gyeong (경, 庚), Mu (무, 戊) inside it. Korean calls these 지장간 — the stems hidden in a branch.
The stem and the branch are the same element.
On the calendar
Sa is the character for the month that opens at Ipha (Start of Summer), and for the hours from 9am to 10:59am.
It sits 54th in the cycle of sixty. Days run in that order, so the same two characters come back every sixty days.
Days that were Jeong-sa in 2027
A day turns at midnight. For a birth between 11pm and midnight, some schools read the next day instead. CELESTRY reads it as the same day by default and lets you choose the other.
Days that were Jeong-sa in 2026
Days that were Jeong-sa in 2025
Days that were Jeong-sa in 2024
Days that were Jeong-sa in 2023
Days that were Jeong-sa in 2022
Days that were Jeong-sa in 2021
Days that were Jeong-sa in 2020
Days that were Jeong-sa in 2019
Days that were Jeong-sa in 2018
Days that were Jeong-sa in 2017
Days that were Jeong-sa in 2016
Days that were Jeong-sa in 2015
Days that were Jeong-sa in 2014
Days that were Jeong-sa in 2013
Days that were Jeong-sa in 2012
Days that were Jeong-sa in 2011
Days that were Jeong-sa in 2010
Days that were Jeong-sa in 2009
Days that were Jeong-sa in 2008
Days that were Jeong-sa in 2007
Days that were Jeong-sa in 2006
Days that were Jeong-sa in 2005
Days that were Jeong-sa in 2004
Days that were Jeong-sa in 2003
Days that were Jeong-sa in 2002
Days that were Jeong-sa in 2001
Days that were Jeong-sa in 2000
Days that were Jeong-sa in 1999
Days that were Jeong-sa in 1998
Days that were Jeong-sa in 1997
Days that were Jeong-sa in 1996
Days that were Jeong-sa in 1995
Days that were Jeong-sa in 1994
Days that were Jeong-sa in 1993
Days that were Jeong-sa in 1992
Days that were Jeong-sa in 1991
Days that were Jeong-sa in 1990
Days that were Jeong-sa in 1989
Days that were Jeong-sa in 1988
Days that were Jeong-sa in 1987
Days that were Jeong-sa in 1986
Days that were Jeong-sa in 1985
Days that were Jeong-sa in 1984
Days that were Jeong-sa in 1983
Days that were Jeong-sa in 1982
Days that were Jeong-sa in 1981
Days that were Jeong-sa in 1980
Days that were Jeong-sa in 1979
Days that were Jeong-sa in 1978
Days that were Jeong-sa in 1977
Days that were Jeong-sa in 1976
Days that were Jeong-sa in 1975
Days that were Jeong-sa in 1974
Days that were Jeong-sa in 1973
Days that were Jeong-sa in 1972
Days that were Jeong-sa in 1971
Days that were Jeong-sa in 1970
Days that were Jeong-sa in 1969
Days that were Jeong-sa in 1968
Days that were Jeong-sa in 1967
Days that were Jeong-sa in 1966
Days that were Jeong-sa in 1965
Days that were Jeong-sa in 1964
Days that were Jeong-sa in 1963
Days that were Jeong-sa in 1962
Days that were Jeong-sa in 1961
Days that were Jeong-sa in 1960
Days that were Jeong-sa in 1959
Days that were Jeong-sa in 1958
Days that were Jeong-sa in 1957
Days that were Jeong-sa in 1956
Days that were Jeong-sa in 1955
Days that were Jeong-sa in 1954
Days that were Jeong-sa in 1953
Days that were Jeong-sa in 1952
Days that were Jeong-sa in 1951
Days that were Jeong-sa in 1950
A day pillar is not read on its own
The day pillar is one line of a four-line coordinate. Two people can share it and, with the other three lines different, not be alike.
CELESTRY reads all eight characters and writes down which of them each area was read from.