Yama in Yoga Explained

According to Hindu Concepts and Rigveda Deities, Yamraj is called the deity of Death and Justice. As you already know, Patanjali used the word Yama as "stop" or "Control", Yama word is taken from Rigveda because Yamraj is one who stops our life as death. We are here on earth not to enjoy but for a mission. If we would be here just for enjoyment, God could offer us paradise for that but unfortunately, we have forgotten our main mission and objective.

Yamraj waits for the right time according to the justice of Karma and takes away the Panch Prana (5 Prana) step by step which is the process of death.
If you do not know about Karma Concept, please read this blog for understanding the rules of Karma:
Click to read: What is Karma? - Blog
Yamraj is the son of God Surya (the sun). Same to Sun, Mars, and Saturn, Yamraj is also a destroyer. According to the Vedas, Yama is the first mortal who died. Although Shiva comes first as AdiYogi (The first Yogi) but Shiva is immortal that's why Yamraj showed the demonstration fo death to the creator Lord Brahma.

Yama is not an automatic stoppage. If you are in a yogic practice, doing some amazing daily schedule, it will not stop any kind of Vritti or habits until you take an oath or Vow. Yama is a serious matter and a very hard step of Yoga. It's like if you have to wake up at 4 am and go to the roof, the very first step is very hard to do. All the illusions (Maya) will stop you to do such a great work of early morning wake up and force you to sleep more. After the first step. it is not as hard as other steps.

Yama has 5 steps to follow:

The word Dharma means Responsibility or Justice and Pala means who nourishes or take responsibility. Yama is called Dharmapala because when the human finishes all the duties on earth, it is justified to stop his life. Even if, the human is doing great karma, Dharmapala may give him death to stop his good karma also, because good karma is storage that will make a destiny. While enjoying the good karma as destiny, the human may do mistakes again as bad Karma.
Click to read: What is Karma? - Blog

Yamlok simply means the place of Yama. Yamaloka is the first destination after death. Yamaloka is the place where an accountant is having all the tally of your good karma and bad karma and shows it after death to the dead person.

In Buddhist Cosmology, there are Devas as Gods and Asuras as demons.

Buddhism has Major Devas as follows:

The word Muhurta Means "Division of Time". Every day we have some auspicious times and unfortunate or Inauspicious times also.

There are 30 Muhurta (period/divisions of time) as follows:

Pluto is also called Yama in ancient Indian stories. When Pluto or Yama enters the chart of Vedic Astrology of someone, it is considered as death. Pluto does not interfere with the Navagraha's Roles but when it appears in the Kundali (Birth Chart), the person may die in that time period.

9 Vedic Planets (Navagraha) are as follows: