Sandhyavandanam
Prayers at Sandhya time are called "Sandhyavandanam" .The main objective of Sandhyavandanam is to avail benefits of Sandhya for an individual. The early morning it is pratah sandhya and in the evening it is sayam sandhya and in the noon it is called the Madhyanikham meaning the mid day.
Vedic References
References are there regarding 'Sandhyavandanam' in Thaithria , Ishavasya and Chandogya Upanishads. They all bring out the importance of offering 'Arghya' meditating on 'Adithya'. This form of worship will help an individual to acquire the qualities of 'Adithya'- namely lustrous and healthy body and mind , high intellect with grasping power , high intuition , memory etc.
Chandogya Upanishads brings out also the importance of worshipping 'Adithya' through Gayathri Hyms
Abhivadye is salutions to the elderly considering them to be the God or Godesses seeking their blessings, informing them about your gotra the three rishies you follow and lastly your name.
Abhivadaye (Vaisvamitra, Aghamarsana, Kausika, traya- ) arseya pravaranvita (Kaushiks) gotrah, (Apastamba) sutrah, (Yajuh) sakhadhyayi, sri (Your name) namaham asmi bhoh
Meaning 18O all-formed Devi, I salute your lotus feet. I am born in the gotrah which has (Visvamitra, Aghamarsana, Kausika) rsi-triad as the patriarchs. I follow the (Apastamba) sutra and study (Yajur) Veda. I am called Sri (Your name).