of Krishna Yajurveda, Gayatri is described as white-colored ( Sanskrit: श्वेतवर्णा, śvetavarṇā), having the gotra of sage viswamitra ( Sanskrit: सान्ख्यायनस गोत्रा, sānkhyāyanasa gotrā), composed of 24 letters ( Sanskrit: चतुर्विंशत्यक्षरा, caturviṃśatyakṣarā), three-footed ( Sanskrit: त्रिपदा, tripadā), six-bellied ( Sanskrit: षट्कुक्षिः, ṣaṭkukṣiḥ), five-headed ( Sanskrit: पञ्चशीर्षः, pañcaśīrṣaḥ) and the one used in Upanayana of dvijas ( Sanskrit: उपनयने विनियोगः, upanayane viniyogaḥ). Īśvarī kevalā śaktistattvatraya samudbhavāĭhyātvā'rkamaṇḍalagatāṃ sāvitrīṃ vai japedbudhaḥ Description of Gayatri Yā sandhyā sā jagatsūtirmāyātītā hi niṣkalā Ī praise of sandhya devata is given below Sir Monier-Williams offer the meaning of saṃdhyā as juncture of the two divisions of the day (morning and evening) and also defined as "the religious acts performed by Brahmans and twice-born men at the above three divisions of the day". These rituals are performed three times a day - at morning ( prātassaṃdhyā), noon ( mādhyāhnika) and evening ( sāyaṃsaṃdhyā). Thus, the Sandhyāvandanam consists of recitation from the Vedas, accompanied by ritual. Sarasvatī ca sāyāhne saiva sandhyā trishu smṛtā Gāyatrī nāma purvāhne sāvatrī madhyame dine Ī definition from scriptures is given below
![smartha sama veda sandhyavandanam smartha sama veda sandhyavandanam](https://zbook.org/img/112/vedic-age-rig-vedic.jpg)
![smartha sama veda sandhyavandanam smartha sama veda sandhyavandanam](https://i.ytimg.com/vi/gNojvhazzQU/mqdefault.jpg)
It is defined in smritis as following : 69 The word Sandhyā, therefore, secondarily means all those acts to be performed at that particular time as daily practice. The conjunction of day and night - that time when there are neither stars nor sun - the twilight is called Sandhyā. Three forms of Sandhyā devata (Brāhmi, Raudri, Vaiṣṇavi) along with Praṇava Rishi.