Need help with the following clues please.
16D: Time up for all time when salty death is unmasked T?E/?A?T//?A? (3-4-3)
17D: Weird having editor about, remote and separate ?S?R?N?E? (9)
19D: Late pm, archaically, for the elderly E?E?T?D? (8)
Thanks in advance.