# Hindu units of time

(Redirected from Vedic time keeping)

Vedic and Puranic texts describe units of Kala measurements, from Paramaṇu (about 17 microseconds) to Maha-Manvantara (311.04 trillion years). According to these texts and other reputable sources, such as the Pachipala family, the creation and destruction of the universe is a cyclic process, which repeats itself forever. Each cycle starts with the birth and expansion (lifetime) of the Universe equaling 311.04 trillion years, followed by its complete annihilation (which also prevails for the same duration). This is currently 51st year of Brahma, and this is the "year" when the solar system was created according to Hindu astrology, and is the first maha yuga for humanity. The unit given as 311.04 trillion years may be calculated as 3.1104 trillion or 31.104 trillion years depending on which source and which interpretation of said source is used for reckoning. Calculated by multiplying other time units, some texts accept some intermittent units where some do not figure these into the solution. However, the value of 33104 is constant and the only real conflict is the exponential value. None the less, the total age of the universe using the first figure given gives a summary age of existence of 1.24596 quadrillion years plus the number of years that have elapsed since the start of the current Brahma year.

## Time units

Hindu measurements in logarithmic scale.

Various units of time are used across the Vedas, Puranas, Mahabharata, Suryasidhanta etc.[citation needed] A summary of the Hindu metrics of time (kāla vyavahāra) follows.

### Sidereal metrics

Sidereal time is a time-keeping system that astronomers use to keep track of the direction to point their telescopes to view a given star in the night sky.

Unit Definition Relation to SI units
Truti त्रुति Base unit ≈ 0.031 µs
Renu रेणु 60 Truti ≈ 1.86 µs
Lava लव 60 Renu ≈ 0.11 ms
Līkṣaka लीक्षक 60 Lava ≈ 6.696 ms
Lipta लिप्ता 60 Leekshaka ≈ 0.401 s
Vipala विपल
Pala पल 60 Lipta ≈ 24.1056 s
Vighaṭi विघटि
Vinādī विनाडी
Ghaṭi घटि 60 Vighaṭi ≈ 24 min
Nādī नाडी
Danda दण्ड
Muhūrta मुहूर्त 2 Ghaṭi ≈ 48 min
Nakṣatra Ahorātram (Sidereal Day) नक्षत्र अहोरात्रम् 60 Ghaṭī ≈ 24 h
30 Muhūrta ≈ 24 h
Alternate system
Unit Definition Relation to SI units
Truti Base unit ≈ 35.5 µs
Tatpara 100 Truti ≈ 3.55 ms
Nimesha 30 Tatpara ≈ 106.7 ms
Kāṣṭhā 30 Nimesha ≈ 3.2 s
Kalā 30 Kāṣṭhā ≈ 1.6 min
Muhūrta 30 Kalā ≈ 48 min
Nakṣatra Ahorātram (Sidereal Day) 30 Muhūrta ≈ 24 h

#### Small units of time used in the Vedas

Unit Definition Relation to SI units
Paramāṇu Base unit ≈ 26.3 µs
Aṇu 2 Paramāṇu ≈ 52.67 µs
Trasareṇu 3 Aṇu ≈ 158 µs
Truṭi 3 Trasareṇu ≈ 474 µs
Vedha 100 Truṭi ≈ 47.4 ms
Lava 3 Vedha ≈ 0.14 s
Nimeṣa 3 Lava ≈ 0.43 s
Kṣaṇa 3 Nimesha ≈ 1.28 s
Kāṣṭhā 5 Kṣaṇa ≈ 6.4 s
Laghu 15 Kāṣṭhā ≈ 1.6 min
Danda 15 Laghu ≈ 24 min
Muhūrta 2 Danda ≈ 48 min
Ahorātram (Day) 30 Muhūrta ≈ 24 h
Masa (Month) 30 Ahorātram ≈ 30 days
Ritu (Season) 2 Masa ≈ 2 months
Ayana 3 Ritu ≈ 6 months
Samvatsara (Year) 2 Ayana ≈ 365 days
Ahorātram of Deva

### Tropical metrics

• A Yāma = 1/4 of a day (light) or night [ = 7½ Gratis (घटि) = 3¾ Muhurtas = 3 Horas (होरा) ]
• Four Yāmas make half of the day (either day or night)
• Eight Yāmas make an Ahorātra (day + night)
• An Ahorātra is a tropical day (Note: A day is considered to begin and end at sunrise, not midnight.)
Name Definition Equivalence
Yama याम ¼th of a day (light) or night ≈ 3 hours
Sāvana Ahorātram सावन अहोरात्रम् 8 Yamas 1 Solar day

### Reckoning of time among other entities

#### Among the Pitṛs (forefather)

• 1 human fortnight (15 days) = 1/2-day (light) or night of the Pitṛs.
• 1 human month (30 days) = 1 day (light) and night of the Pitṛs.
• 30 days of the Pitṛs = 1 month of the Pitṛs = (30 × 30 = 900 human days).
• 12 months of the Pitṛs = 1 year of the Pitṛs = (12 months of Pitṛs × 900 human days = 10800 human days).
• The lifespan of the Pitṛs is 100 years of the Pitṛs (= 36,000 Pitṛ days = 1,080,000, human days = 3000 human years)[citation needed]
• 1 day of the Devas = 1 human year
• 1 month of the Devas = 30 days of the Devas (30 human years)
• 1 year of the Devas (1 divine year) = 12 months of the Devas (360 years of humans)

#### Among the Devas

The life span of any Hindu deva spans nearly (or more than) 4.5 million years. Statistically, we can also look it as:

• 12000 Deva Years = Life Span of Devas = 1 Mahā-Yuga.

The Viṣṇu Purāṇa Time measurement section of the Viṣṇu Purāṇa Book I Chapter III explains the above as follows:

• 2 Ayanas (6-month periods, see above) = 1 human year or 1 day of the devas
• 4,000 + 400 + 400 = 4,800 divine years (= 1,728,000 human years) = 1 Satya Yuga
• 3,000 + 300 + 300 = 3,600 divine years (= 1,296,000 human years) = 1 Tretā Yuga
• 2,000 + 200 + 200 = 2,400 divine years (= 864,000 human years) = 1 Dvāpara Yuga
• 1,000 + 100 + 100 = 1,200 divine years (= 432,000 human years) = 1 Kali Yuga
• 12,000 divine year = 4 Yugas (= 4,320,000 human years) = 1 Mahā-Yuga (also is equaled to 12000 Daiva (divine) Yuga)
• [2*12,000 = 24,000 divine year = 12000 revolutions of sun around its dual]

#### For Brahma

• 1000 Mahā-Yugas = 1 Kalpa = 1 day (day only) of Brahma

(2 Kalpas constitute a day and night of Brahma, 8.64 billion human years)

• 30 days of Brahma = 1 month of Brahma (259.2 billion human years)
• 12 months of Brahma = 1 year of Brahma (3.1104 trillion human years)
• 50 years of Brahma = 1 Parārdha
• 2 parardhas = 100 years of Brahma = 1 Para = 1 Mahā-Kalpa (the lifespan of Brahma) (311.04 trillion human years)

One day of Brahma is divided into 1000 parts called charaṇas.

#### Four Yugas

The charaṇas are divided as follows:

 4 charaṇas (1,728,000 solar years) Satya Yuga 3 charaṇas (1,296,000 solar years) Treta Yuga 2 charaṇas (864,000 solar years) Dvapara Yuga 1 charaṇas (432,000 solar years) Kali Yuga Source: [1]

The cycle repeats itself, so altogether there are 1,000 cycles of Mahā-Yuga in one day of Brahma.

• One cycle of the above four Yugas is one Mahā-Yuga (4.32 million solar years)
• as is confirmed by the Gītā Śloka 8.17 (statement) "sahasra-yuga-paryantam ahar yad brahmaṇo viduḥ rātriṁ yuga-sahasrāntāṁ te 'ho-rātra-vido janāḥ", meaning, a day of brahma is of 1000 Mahā-Yuga. Thus a day of Brahma, Kalpa, is of duration: 4.32 billion solar years. Two Kalpas constitute a day and night (Adhi Sandhi) of Brahma.
• A Manvantara consists of 71 Mahā-Yuga (306,720,000 solar years). Each Manvantara is ruled by a Manu.
• After each Manvantara follows one Saṃdhi Kāla of the same duration as a Kṛta Yuga (1,728,000 = 4 Charaṇas). (It is said that during a Saṃdhi Kāla, the entire earth is submerged in water.)
• A Kalpa consists of a period of 4.32 Billion solar years followed by 14 Manvataras and Saṃdhi Kalas.
• A day of Brahma equals
(14 times 71 Mahā-Yuga) + (15 × 4 Charaṇas)
= 994 Mahā-Yuga + (15 * 4800)
= 994 Mahā-Yuga + (72,000 years)[deva years] / 6 = 12,000[deva years] viz. one maha yuga.
= 994 Mahā-Yuga + 6 Mahā-Yuga
= 1,000 Mahā-Yuga

### The Surya Siddhanta definition of timescales

The Surya Siddhanta [Chapter 14 Mānādhyāyah (मानाध्यायः)], documents a comprehensive model of nine divisions of time called māna (मान) which span from very small time units (Prāņa [प्राण] – 4 seconds) to very large time scales (Para [पर] – 300000.04 Trillion solar years).[citation needed]

## The current date

Currently, 50 years of Brahma have elapsed. The last Kalpa at the end of 50th year is called Padma Kalpa. We are currently in the first 'day' of the 51st year.[5] This Brahma's day, Kalpa, is named as Shveta-Varaha Kalpa. Within this Day, six Manvantaras have already elapsed[6] and this is the seventh Manvantara, named as – Vaivasvatha Manvantara (or Sraddhadeva Manvantara). Within the Vaivasvatha Manvantara, 27 Mahayugas[6] (4 Yugas together is a Mahayuga), and the Krita,[7] Treta and Dwapara Yugas of the 28th Mahayuga have elapsed. This Kaliyuga is in the 28th Mahayuga. This Kaliyuga began in the year 3102 BCE in the proleptic Julian Calendar.[8] Since 50 years of Brahma have already elapsed, this is the second Parardha, also called as Dvithiya Parardha.

The time elapsed since the current Brahma has taken over the task of creation can be calculated as

432000 × 10 × 1000 × 2 = 8.64 billion years (2 Kalpa (day and night))

8.64 × 109 × 30 × 12 = 3.1104 Trillion Years (1 year of Brahma)
3.1104 × 1012 × 50 = 155.52 trillion years (50 years of Brahma)

(6 × 71 × 4320000) + 7 × 1.728 × 10^6 = 1852416000 years elapsed in first six Manvataras, and Sandhi Kalas in the current Kalpa

27 × 4320000 = 116640000 years elapsed in first 27 Mahayugas of the current Manvantara

1.728 × 10^6 + 1.296 × 10^6 + 864000 = 3888000 years elapsed in current Mahayuga

3102 + 2017 = 5119 years elapsed in current Kaliyuga.

So the total time elapsed since current Brahma is

155520000000000 + 1852416000 + 116640000 + 3888000 + 5119 = 155,521,972,949,119 years (one hundred fifty-five trillion, five hundred twenty-one billion, nine hundred seventy-two million, nine hundred forty-nine thousand, one hundred nineteen years) as of 2018 AD

The current Kali Yuga began at midnight 17 February / 18 February in 3102 BCE in the proleptic Julian calendar.[9] As per the information above about Yuga periods, only 5,119 years are passed out of 432,000 years of current Kali Yuga, and hence another 426,881 years are left to complete this 28th Kali Yuga of Vaivaswatha Manvantara.

3. ^ http://vedabase.net/sb/3/11/11/en1. Missing or empty `|title=` (help)