Word meaning in (particular) Christmas carol

Cafe Society
1

What is an end’res night? From this 16th century English carol, I can’t figure out what the word enderes means. Some printed versions of the carol spell it endres, endris, or enderes. Words with musical notation show it as end’res, indicating that it is perhaps a three syllable word, or multiple words, shortened to fit two syllables. Here is the poem in full, for meaning.

As I outrode this enderes night
Of three jolly shepherd I saw a sight;
And all about their fold a star shone bright.
They sang terliterlow.
So merrily the shepherds their pipes can blow.
Down from heaven so high of angels
There came a great company with joy and mirth.
And great solemnity.
They sang terliterlow.
So merrily the shepherds their pipes can blow.

2

This CD liner notes says it means “the other night,” which sounds OK to me; “andere” is German for “other,” and “endris” and “andere” aren’t too far apart.

ETA: The Utah Chamber Artists agree.

3

It means “passing”, according to the source cited at Wikiquote.

http://en.wikiquote.org/wiki/Coventry_Mystery_Plays

4

Per the OED:

5

So the colloquial meaning of “other,” then. Not as “not this book, the other book!” but as we would say “We were talking about you just the other day!” meaning a recent day.

As I outrode this enderes night
As I outrode the other night

So the other day I was driving down I-77, and . . .