Greek-English translations for όταν

• when
  When will they arrive?
  Do you know when they arrived?
  I dont know when they arrived.
• AS
• if
  If it rains, I shall get wet
  If A, then B, else C.
  I would prefer it if you took your shoes off.
• while
  He lectured for quite a long while
  He was sleeping while I was singing
  This case, while interesting, is a bit frustrating