Bheeshm's Death
It was told to Bheeshm in the Heaven itself before coming to Earth, that he must die when the Sun is in northern solstice, otherwise he will not be able to come back to his previous position of Vasu. He was the eighth Vasu left on Prithvi to bear the Shaap of Vashishth. The rest seven left Prithvi through the grace of Gangaa. That is why he was very particular about the time of his death.

Bows
There were only three celestial bows in Mahaabhaarat - Gaandeev of Varun with Arjun, Vijaya of Indra with Rukmee, and Shaarng of Vishnu with Krishn.
Gaandeev was obtained by Arjun through Agni Dev at the time of Khaandav Van burning,
Vijaya was obtained by Rukmee from Drone, and
Shaarng bow was obtained by Krishn at the time of slaying Narakaasur, recovering various kinds of gems and jewels, 16,000 girls and mother Aditi's earrings from there.

Cleaned Himself
During the days of mourning, after the death of a person in a family, a person is considered unclean. He cannot perform his daily worship and other religious rites during that period. After completing all ceremonies related to it, the man is supposed to be clean, and he can resume his normal duties. Normally it is of 13 days.

Cubit
It is used to measure a length of a linear thing in Middle Ages and early modern times. It was measured from the tip of the middle finger to the elbow of a normal person. A natural cubit measures 24 digits, or 6 palms (6 times distance between the two opposite lines of a palm), or 45 centimeters, or 18 inches.

Dhan (Wealth)
Garud explains Dhan as wealth. He said to Gaalav Muni - "Because it is created by Agni (fire), and augmented by Vaayu (air), and Earth itself is said to be Hiranyamaya, that is why wealth is called Hiranya. And because wealth supports the world and sustains life, it is called Dhan. To meet these two ends Dhan exists in the world since the beginning."

Dharm, Arth, Kaam, Moksh
There are four aims of people in this world - Dharm, Arth, Kaam, and Moksh. All people work only to achieve these aims only.

(1) Dharm (religion) - One's own nature and duty towards others. Everybody has his own Dharm towards others, so one should follow his own Dharm. To know about one's own Dharm, people should read ethics, religious books and study their own nature. People in this world always want to earn some Dharm, that is why they do charity work, give donations, do good to others etc.
(2) Arth means wealth. Another aim of life is to earn money. (see Dhan above)
(3) Kaam (desires). Everybody has some kind of desire in this world and he always wishes that they should be fulfilled. The problem with the desires is that they are never fulfilled completely. As soon as one desire is fulfilled, another one arises, and the man starts fulfilling that desire. There is no end of them.
(4) Moksh (emancipation). Everybody wishes for Moksh so that he is freed from the cycle of births and rebirths.

Divine Pot
Draupadee had a divine pot (Akshaya Paatra), given by Soorya Dev to feed Braahman who depended on Yudhishthir. Yudhishthir got it by worshipping Soorya. It used to give food until Draupadee had eaten her food.

Four Elephants
In Hindu mythology there are four elephants (some say they are ten). The reference of these elephants comes at two places: (1) In Vaalmeeki Raamaayan, in Kishkindhaa Kaand, when Sugreev sends his Vaanar in search of Seetaa, he mentions about them; and (2) In Bhaagvat Puraan, 9th Skandh, in the story of Raajaa Sagar, when his 60,000 sons went in the search of their father's Yagya horse, and they dug the earth, they met these four elephants. Even Anshumaan, Sagar's grandson, also met them.

Four Kinds of Subjects
Oviparous, Viviparous, those born of filth, and the vegetables.

Fourth State
There are three states of consciousness in case of an ordinary man, waking, dreaming and sound sleep. The fourth state that is realized only by Yogee, is called Tureeya. It is the state of perfect unconsciousness of this world, when the soul, abstracted within itself, is said to be fixed upon Supreme Being or some single object.

Gangaa
It is believed that Gangaa came here, in Bindusar, in three streams. In Heaven she is called Mandaakinee, on Earth she is called Gangaa, and in subterraneous world she is called Bhogvatee. Then divided herself in seven streams - Vaswokasar, Nalinee, Saraswatee, Jambonadee, Seetaa, Gangaa and Sindhu. Saraswatee is visible in some parts, and not visible in some parts.

Garud's Descendents
Read about them in "Story of Maatali".

Harder Rules
The rule laid down here is that he should eat in the morning for three days, eat in the evening for next three days, eat nothing but without soliciting for next three days, fast altogether for the next three days. This is called Krishchar Bhojan. Observing this rule for six years one can cleanse his sin for slaying a Braahman. The harder rule referred to is eating in the morning for seven days, in the evening for the next seven days, eating but without soliciting for next seven days, and fast altogether for the next seven days.

Ichchhaa Mrityu
This boon was given to Bheeshm (Devavrat) by his father Shaantanu when he got pleased on sacrifice of Bheeshm that he wouldn't marry at all so that Satyavatee and Shaantanu's children can rule Hastinaapur. In this boon, Bheeshm had full control on his death as whenever he wanted to die, he could die.

Limbs
The limbs that should be 'prominent' or 'elevated' in order to constitute an indication of beauty or auspiciousness are variously mentioned. The general opinion seems to be that these are six only, the back of each palm, the two dorsa, and the two bosoms should be elevated. Another opinion would seem to indicate that the two bosoms, the two hips, and the two eyes should be so. The seven that should be delicate or slender are unanimously mentioned as the skin, the hair, the teeth, the fingers of the hands, the fingers of the feet, the waist, and the neck. The three that should be deep are the navel, the voice, and the understanding. The five that should be red are the two palms, the two outer corners of the eyes, the tongue, the nether and the upper lips, and the palate. These five also, are variously given.

Muhoort
About 50 minutes time.