instant vs solar day

instant

noun
  • A single, usually precise, point in time. 

  • A beverage or food which has been pre-processed to reduce preparation time, especially instant coffee. 

  • A very short period of time; a moment. 

adv
  • At once; immediately. 

adj
  • Present; current; extant. 

  • Very quickly and easily prepared. 

  • Of the current month. 

  • Occurring immediately; immediate; present. 

  • Lasting for a short moment; momentary; short-lived. 

solar day

noun
  • one day of solar time, the time between successive noons; the time in which a planet such as Earth apparently rotates once around its axis, relative to the sun (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year) 

How often have the words instant and solar day occurred in a corpus of books? (source: Google Ngram Viewer )