古罗马与古希腊的占星家们大多数使用着一种特殊的推运系统——DASA。其中有一个概念“时主”也就是chronocrator是被经常使用与这种推运中来论断某些事件发生的性质以及区域，以及人生运势所发展的阶段。这种推运系统与现存西方的推运系统是完全不同的。

这一用法在我目前所阅读的书中应该有详细的介绍。目前我们所能了解到的有关于时主的概念以及应用都是来自firmicus maternus的书中。

古罗马以及古埃及的占星术中只包含七颗星体，并不包括rahu以及kethu（在印度占星学中包含了）

在人生的运程之中，每颗星体都有其主宰的阶段。比如月亮在金牛座，水星在巨蟹座，金星在狮子座，那么月亮便是大运的起始，接下来则是水星运，金星运，以此类推。

根据《mathesis》一书中所提到的，第一阶段大运的起始都是从日月开始计算。日生盘起始运势为太阳，夜生盘则相对应的为月亮。不过根据过往的经验来看，似乎所有的运势七点都应该按照月亮来进行推算。当然这可能是进一步的研究了。

每个星体的运势都会维持10年又9个月，也就是129个月的时长。每个大运又被划分成七个小的运势，其分配方式如下：

太阳：19个月

月亮：25个月

火星：15个月

水星：20个月

木星：12个月

进行：8个月

土星：30个月

在十年一期间的大运中又划分出的阶段性运势，其顺序和主体大运的顺序是保持一致的。但是每一阶段小运起始主宰星都是这阶段大运的主宰星体。

比如月亮大运划分为七个小运阶段，则第一阶段的运势主宰星必定为月亮，之后的运势顺序和大运的顺序保持一致。

关于主要大运的预测

根据 mathesis这本书提到的，由光体所主宰的运势一般来说都不是太好啊。如果此时的月亮为盈月，或者任何光体与火星土星产生相位，会带来更不好的影响，但是吉星的影响会减少这种不利的因素。总体上来说一个原则，遇凶则凶，遇吉则化凶。

判断各个阶段运势中事业，爱情，婚姻的影响，可以联系星体落入的宫位以及交角来做判定。

 

 

 

太阳大运通常会带来疾病，眼部问题，发烧或者是关于火灾方面的困扰。这段时间容易为了房子和财产发生争执。父亲这段期间也不是很顺利，以及象征着本命星盘中太阳落入宫位的事物容易遇到不利的影响。

 

月亮大运的主要体现是变化。容易将早期积累的物质遗失，某些暗地里的嫉妒会给你带来影响。要注意远离水边，以免发生危险。

 

 火星大运容易改变人生的轨迹。有可能以前觉得正确的事情现在再思考便觉得不是那么正确。以前形成的世界观和人生信念容易在这个阶段出现改变，社会地位也会发生更迭。如果是好的影响力，则会进一步获得更高的社会地位。反之亦然。这个阶段可能会出现钱财的损失，争吵，金钱上的问题以及意外。

 

 水星大运通常是幸福快乐的，一些有意义的以及何时的事情会发生，与某些地位重要的人成为朋友。合作以及生意上的往来事物变得比较频繁，会带来许多额外的收益。不过这些幸运与收益都来自你自己的劳动和付出，并不是天上掉下来的。不过一些以前曾经出现过的争吵可能会为以后埋下不良的隐患。这段期间要注意祸从口出。

 

 木星大运期间会迎来荣誉、财富以及其他幸运的事情。如果出生盘的运期允许，很有可能在这段期间内结婚生子。工作上的事宜会发展的很顺利，迎来事业上的高峰期。

 

 金星大运期间时段美好的时光，充满着浪漫的情调。总的基调是顺利舒适的，有婚姻的家庭会觉得十分享受这段期间的两人关系，不过也容易滋生第三者。往往那些有情人的人可能会被发现，以及被闲话。

 

 土行大运期间一切事物的发展都很缓慢，困难、挫折一个接一个，经常面对失败的现实。这段期间可能会因为死亡或者分立，失去身边亲近的家人或者朋友。假如本命中土星象征着什么不好的事宜或者某些方面的损失，则这段期间这种不好的影响会更加明显。

 

小运期间

SUN - SUN
没什么好的事情发生，倒是很多麻烦出现。

SUN - MOON
生活显得杂乱无章一团乱。以前得到的东西很有可能会失去。生活变得很颠簸。

SUN - MARS
物质财富的损失，与人发生争吵。眼部有疾病。

SUN - MERCURY

会有频繁的生意事物上的往来，也会带来不错的收益，但是这一切都是依靠之前的努力。

 

SUN - JUPITER
由于木星的影响，这段期间的事情显得十分顺利，好运连连，霉运通通扫光。工作顺心，身体健康。是一段非常不错的时期。

SUN - VENUS
Prosperity in most affairs, but certain troubles from the partner. A malevolent concealed mind in the partner both betrays and then covers itself. Therefore quarrels are indicated.

SUN - SATURN
In a nocturnal charts there will be pestilence and death, but in diurnal charts it indicates great prosperity.

MOON - SUN
This indicates fire and illness with fever.

MOON - MOON
This gives a bad prediction or even death if influenced by malefics. If by benefics a moderate increase in possessions after struggle.

MOON - MARS
This brings the effect of riots, revolutions and catastrophes.

MOON - MERCURY
There will be chills and illness with weakness of the body.

MOON - JUPITER
Indicates joy, happiness and increase of prosperity. All dangers, fears and illnesses are put to sleep.

MOON - VENUS
In diurnal charts this brings sterility, but in nocturnal charts it gives increase in possessions, especially if the Moon is warning.

MOON - SATURN
Danger from water or shipwreck.

MARS - SUN
Disturbs the order of life with dangers, calamities and riots. Illness and pains in the eyes.

MARS - MOON
There will be preceding evils and also dangers.

MARS - MARS
Important occupation with powerful disturbances. Danger to the activities, especially in a diurnal chart.

MARS - MERCURY
Certain dangers from written things or loss from forgeries. But often enemies are destroyed in various ways.

MARS - JUPITER
This indicates prosperity and makes the affairs turn out well with profit and high position. It heals sickness, gives rest from suffering, security from anxiety, return for wanderers, end to litigations and abundance for those in need.

MARS - VENUS
A prosperous time freed from dangers. But some hidden scandal is brought to light from promiscuous intercourse etc. This is made public by the influence of Sun and Mercury, but it will be concealed by Jupiter's influence.

MARS - SATURN
There will be slow progress in activities and many affairs are hindered.

MERCURY - SUN
This period will give loss of inheritance and serious anxieties of the mind.

MERCURY - MOON
Illness and weakness of body. Also there will be cold sluggishness of mind.

MERCURY - MARS
Enemies brings in accusations or litigations.

MERCURY - MERCURY
All good things and prosperity are indicated with a fortunate outcome to the activities.

MERCURY - JUPITER
A quiet time, free from all disturbances, but there are great rewards of praise and happiness. Especially to those who has no children, if their charts permits.

MERCURY - VENUS
Good fortune and constant prosperity. Security, tranquillity and profit.

MERCURY - SATURN
This indicates calamities like the loss or death of someone; parents, relatives, patrons - and all such persons who are of use to the native.

JUPITER - SUN
Some secrets are made public, which brings anxieties and changes the activities in various ways. Things collected are now scattered, and everything is disturbed and confused.

JUPITER - MOON
A period of tranquillity, increase and protection. Previous pains, fears, misfortunes, griefs and bad luck are now solved, and a civilized time of good fortune approaches, wiping away troubles.

JUPITER - MARS
This changes the order of life and occupation, and whatever was carried on before is transferred into another kind of life, so that the position held before are lost; or Mars will be harmful with various kinds of crises.

JUPITER - MERCURY
This indicates occupation with much profit, protection from important friendships, promotion in all assigned duties and good fortunes from all activities.

JUPITER - JUPITER
There will be fortune, glory, honour, happiness and increase of income. If Jupiter had decreed marriage and children, then the native can have that - if the age permits.

JUPITER - VENUS
This makes prosperous times with good fortune. It predicts marriage or some continual illicit love affair.

JUPITER - SATURN
This will make the native torpid and hindered in activities, which may even lead to failure in occupation.

VENUS - SUN
This makes the wives flee and gives dangers and loss of possessions. If Jupiter aspects, the native are separated from wife by necessary journeys.

VENUS - MOON
This bring light to hidden jalousie and is harmful to important matters due to misfortune.

VENUS - MARS
This brings evils and griefs. It indicate illicit love affairs and imposes love sorrow and disagreement with the worst kind of wives.

VENUS - MERCURY
This confers suitable income, profit and makes all business affairs turn out prosperously. There will be joy and happiness.

VENUS - JUPITER
This indicates a favourable and happy time, but it will stir up certain scandals.

VENUS - VENUS
This gives happiness of love and brings marriage together with personal charm and grace. It indicates happiness and security.

VENUS - SATURN
This stirs up serious quarrels with women. The natives are separated from their wives.

SATURN - SUN
There will be disagreements and quarrelsome confrontations due to house and property matters. Also it is bad for the father and bad for the position of the native.

SATURN - MOON
This will produce illness, dangers, anxieties and calamities. It indicates danger from water and brings accusations or litigations.

SATURN - MARS
It indicates a happy period where evils are put to sleep. For contrary powers cancel each other. (?)

SATURN - MERCURY
This period brings up old disagreements and revives hidden quarrels.

SATURN - JUPITER
If Saturn gave malefic results due to bad placement, then all threats are lessened by the power of the helpful god. If Saturn is in good signs, degrees or trine to Jupiter, then this period indicates the greatest fortune.

SATURN - VENUS
This will make a happy time, separated from misfortune. It corrects difficulties brought on by other planets. But if Saturn has indicated marriage, then the wife would have been a widow before.

SATURN - SATURN
This will inflict severe calamities like illness, losses, break in the relationships, accusations by enemies and various dangers.