Greek question (night?)

[X99Lynx at aol.com]

In a message dated 3/7/99 9:42:14 PM, "Patrick C. Ryan" <proto-
language at email.msn.com> wrote:

<<...if *negh-w- were the basis for both, as I think likely,... *negh-(w)-,
'dark', with root extensions -t, 'night',...>>

Am I correct in this meaning that the reconstruction here is *negh-w-t >
"night?"

Why would that /-t be there?  In which IE languages does -t appear in "night"
besides Germanic or Modern French?

Regards,
Steve Long

[ Moderator's response:
  Greek _nuks, nuktos_, Latin _nox, noctis_, Sanskrit _nak (IIRC), naktam_,
  Hittite _nekuz = nek{^w}t+s_, ...
  --rma ]