Nightime or Nighttime: How To spell?
The word Nightime is misspelled against Nighttime, a noun meaning "The time from dusk to dawn; -- opposed to daytime."
Nighttime has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings nigh & ime which should not be misspelled with single 'T'
Wrong Spelling:  nigh-t-ime  Correct Spelling:  nigh-tt-ime 
Find more wrongly spelled words of Nighttime to spell it well.