Decennials, Firmicus Maternus Online Calculator, (Planetary Decades) Timing method from Mathesis Astrology Planetary Periods

Decennials Calculator
(Planetary Decades)

Traditional time-lord method

This method divides the life into 7 different periods, each lasting 10 years and 9 months. Each of these is governed by one of the 7 planets.
  • The first period starts with the sect light, Sun for diurnal charts, Moon for nocturnal.
  • Following periods/time-lords continue by the next planets after the sect light, going in zodiacal order.
  • Each period is divided into 7 sub-periods. The first sub-period belongs to the same planet as the entire decade. The order of the sub-periods is determined in the same way as the main periods.
  • Optional:
  • Start from Sect Light, Apheta or any other planet
  • Calendar (1 year ~ 360 or 365.25 days)
  • L3 & L4 sub-periods

Decennials (Planetary Decades) - Online Calculator

Date of Birth
Time (local time)
h min
Start from:
Cycle
Calendar to use
L3 & L4:
Current planets
Sun
Capricorn
0°11’
Cap
 
Moon
Virgo
15°30’
Vir
 
Disseminating (255°18’)
Mercury
Sagittarius
8°42’
Sag
 
Venus
Aquarius
16°17’
Aqu
 
Mars
Leo
4°42’
Leo
R
Jupiter
Gemini
14°26’
Gem
R
Saturn
Pisces
13°48’
Pis
 
Uranus
Taurus
23°55’
Tau
R
Neptune
Pisces
27°11’
Pis
 
Pluto
Aquarius
0°45’
Aqu
 
Node (M)
Aries
2°02’
Ari
R
Node (T)
Aries
2°06’
Ari
R
Lilith (M)
Libra
19°24’
Lib
 
Chiron
Aries
19°01’
Ari
R
Calculate when planet
enters next Signs: