Āditya-Vyūha: The Sun in the Brahmāṇḍa Purāṇa

Āditya is a name for the sun, and vyūha means an arrangement or layout. Chapters 21 and 22 of the Pūrva Bhāga (first part) of the Brahmāṇḍa Mahā Purāṇa describe how the sun moves around Meru, the great mountain at the centre of the world. They tell of the rākṣasas called the Mandehās, who attack the sun every dawn and dusk. They describe the sun’s chariot (sūrya-ratha) as a living picture of the year and of the Vedic metres. They also explain the basic units of time, which come from the sun’s movement.

The sun’s path is described in great detail. The Purāṇa gives the earth a diameter of fifty crore yojanas (a yojana is an old measure of distance) and the sun’s disk a width of nine thousand yojanas.

The Four Cities of the Loka-Pālas at Meru

Around Meru, the four main directions are marked by four great cities. Each city is the home of a loka-pāla, a guardian of one direction of the world. These cities are the fixed points used to explain how the sun seems to move across the sky.

The sun keeps circling Meru at a distance. So, seen from each city in turn, the sun seems to be rising, at its highest point, setting, or at midnight. This is how the sun can be rising in Amarāvatī while it is setting in Sukhā at the same time.

Measurements of the World

The Brahmāṇḍa Purāṇa gives these measurements:

• Diameter of the earth: 50 crore yojanas (500,000,000 yojanas)
• Diameter of the sun’s disk: 9,000 yojanas
• Length of the sun’s circular path: about 9 crore yojanas (90,000,000 yojanas)

The Mandehā Rākṣasas

At each saṃdhyā (the meeting-time of day and night, that is, dawn and dusk), thirty crore Mandehā rākṣasas attack the sun. These fearsome beings strike at the sun twice a day and threaten its light and its journey. Two powers work together to drive them back:

1. Water blessed by brāhmaṇas with the Gāyatrī mantra (Gāyatrī-abhimantrita jala). This water is offered to the sun during the sandhyā rite at dawn and dusk.
2. The Vālakhilya munis. These are sixty thousand ṛṣis, each the size of a thumb, who live in strict celibacy (ūrdhvareta) and always travel with the sun’s chariot. The power of their tapas (spiritual discipline) keeps the sun’s journey safe.

This teaching shows why the daily sandhyā-vandana matters so much. When a brāhmaṇa recites the Gāyatrī morning and evening, it is not only a personal practice. It helps protect the whole world. The water charged with the Gāyatrī and offered to Sūrya, the sun, destroys the Mandehā rākṣasas twice every day. Without this protection they would overpower the sun.

The Sun’s Chariot: The Year in Living Form

The Brahmāṇḍa Purāṇa explains the sun’s chariot part by part. Each part stands for a piece of time or of the Vedic rites:

In this picture the sun’s chariot is not just a vehicle. It is the working of time itself, with every part of sacred time in its own place.

The Divisions of the Day

The Brahmāṇḍa Purāṇa gives these units of time, based on the movement of the sun:

The day is also split into five parts of three muhūrtas each:

1. Prātaḥ (early morning)
2. Saṃgava (mid-morning)
3. Madhyāhna (midday)
4. Aparāhṇa (afternoon)
5. Sāyāhna (evening)

Old and New Names of the Months

The Brahmāṇḍa Purāṇa keeps both the old Vedic names of the months and the later names that are used today:

The Water Cycle: Sun and Soma

The sun does more than give light. It also looks after the earth’s water. The Brahmāṇḍa Purāṇa explains that the sun draws up water from the land and the seas with its rays, holds it, and then gives it out again through Soma, the moon. Three kinds of clouds bring rain:

1. Jīmūta: born from moisture that comes from fire (āgneya)
2. Brahma-ja: arising from processes connected with Brahmā
3. Puṣkarāvartaka: active at kalpānta, the end of a kalpa (a vast cycle of time), when they destroy all life in the great floods of the mahāpralaya (the great dissolution)

Sources

• Brahmāṇḍa Mahā Purāṇa, Pūrva Bhāga, Chapters 21–22