Compounds of 何時まで

• 何時まで
  (adv) (uk) how long?
  till when?
• 何時までも
  (adv) (uk) forever
  for good
  eternally
  as long as one likes
  indefinitely
  (P)
• 何時何時までも
  (exp) indefinitely
  for a long time
• 何時まで経っても
  (exp) no matter how much time passes