Ba Zi/Hour Pillar

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Hour Pillar

The Hour Pillar is used in the construction of the Four Pillars of Ba Zi (四柱八字), a method of Chinese Divination based on a person's date and time of birth:

Heavenly Stem of Day Pillar versus Time of Birth (时辰)	H1	H2	H3	H4	H5	H6	H7	H8	H9	H10	Earthly Branch of Hour Pillar
11pm-1am	H1	H3	H5	H7	H9	H1	H3	H5	H7	H9	E1
1am-3am	H2	H4	H6	H8	H10	H2	H4	H6	H8	H10	E2
3am-5am	H3	H5	H7	H9	H1	H3	H5	H7	H9	H1	E3
5am-7am	H4	H6	H8	H10	H2	H4	H6	H8	H10	H2	E4
7am-9am	H5	H7	H9	H1	H3	H5	H7	H9	H1	H3	E5
9am-11am	H6	H8	H10	H2	H4	H6	H8	H10	H2	H4	E6
11am-1pm	H7	H9	H1	H3	H5	H7	H9	H1	H3	H5	E7
1pm-3pm	H8	H10	H2	H4	H6	H8	H10	H2	H4	H6	E8
3pm-5pm	H9	H1	H3	H5	H7	H9	H1	H3	H5	H7	E9
5pm-7pm	H10	H2	H4	H6	H8	H10	H2	H4	H6	H8	E10
7pm-9pm	H1	H3	H5	H7	H9	H1	H3	H5	H7	H9	E11
9pm-11pm	H2	H4	H6	H8	H10	H2	H4	H6	H8	H10	E12

• The Heavenly Stem of the Hour Pillar is obtained from the intersection of the column (Heavenly Stem of Day Pillar) and the row (Time of Birth). For example, for a person born between 5pm-7pm, with a Heavenly Stem of the Day Pillar of H3, the Heavenly Stem of the Hour Pillar will be H4.

• The Earthly Branch of the Hour Pillar is obtained from the last column (Earthly Branch of Hour Pillar) of the above chart. For example, if the Heavenly Stem of Day Pillar is H3 and the time of birth is 6.23pm, then the Hour Pillar is H4, E10.

Hour Pillar Listed For Every Day Heavenly Stem (HS)

1. Hour Pillar For Day HS1
2. Hour Pillar For Day HS2
3. Hour Pillar For Day HS3
4. Hour Pillar For Day HS4
5. Hour Pillar For Day HS5
6. Hour Pillar For Day HS6
7. Hour Pillar For Day HS7
8. Hour Pillar For Day HS8
9. Hour Pillar For Day HS9
10. Hour Pillar For Day HS10