Nocturn I
Either:
2d - Antiphonale Synopticum

or:
8g: Antiphonale Synopticum

Nocturn II
either
8c - Antiphonale Synopticum

or
8G: Antiphonale Synopticum

Either:
2d - Antiphonale Synopticum
or:
8g: Antiphonale Synopticum
Nocturn II
either
8c - Antiphonale Synopticum
or
8G: Antiphonale Synopticum