| Timespan | Meridian | Mother* | Child |
| 03:00-05:00 | Lung | LU-9/LR-8 | LU-5 |
| 05:00-07:00 | Large Intestine | LI-11/LU-9 | LI-2 |
| 07:00-09:00 | Stomach | ST-41/LI-11 | ST-45 |
| 09:00-11:00 | Spleen | SP-2/ST-41 | SP-5 |
| 11:00-13:00 | Heart | HT-9/SP-2 | HT-7 |
| 13:00-15:00 | Small Intestine | SI-3/HT-9 | SI-8 |
| 15:00-17:00 | Urinary Bladder | UB-67/SI-3 | UB-65 |
| 17:00-19:00 | Kidney | KI-7/UB-67 | KI-1 |
| 19:00-21:00 | Pericardium | PC-9/KI-7 | PC-7 |
| 21:00-23:00 | Triple Burner | TB-3/PC-9 | TB-10 |
| 23:00-01:00 | Gall Bladder | GB-43/TB-3 | GB-38 |
| 01:00-03:00 | Liver | LR-8/GB-43 | LR-2 |
* In Japanese acupuncture the mother point of the meridian previously open is used in stead of the mother point on the meridian currently open.
Na Zi Fa - Mother & Child points
Mother and child points are used to manipulate excessive and deficient energy in the meridians
Tonify the mother
If a meridian is deficient then the mother is tonified. The mother is the point previous to the point that has the same element as the open meridian. (the point previous to the horary point) Alternatively to the chinese approach is the Japanese approach where the mother on the meridian previous to the open meridian is tonified.
Reduce the child
If a meridian is in excess then the child is reduced. The child is the point next to the point that has the same element as the open meridian. (the point next to the horary point)
Example
Between 15:00 and 17:00 local solartime the Urinary Bladder meridian is open.
To tonify the Urinary Bladder meridian (Water) the mother point UB-67 is tonified. (this is the point previous to the Water point on the Urinary Bladder meridian) Alternatively the mother point on the meridian previously open SI-3 can be chosen.
To reduce the Urinary Bladder meridian (Water) the child point UB-65 is tonified. (this is the point next to the Water point on the Urinary Bladder meridian)
Between 15:00 and 17:00 local solartime the Urinary Bladder meridian is open.
To tonify the Urinary Bladder meridian (Water) the mother point UB-67 is tonified. (this is the point previous to the Water point on the Urinary Bladder meridian) Alternatively the mother point on the meridian previously open SI-3 can be chosen.
To reduce the Urinary Bladder meridian (Water) the child point UB-65 is tonified. (this is the point next to the Water point on the Urinary Bladder meridian)
