Genre: 
Full text: 
Caeli deus sanctissime qui lucidum centrum poli candore pingis igneo augens decori lumina | Quarto die qui flammeam solis rotam constituens lunae ministras ordini vagos recursus siderum | Ut noctibus vel lumini diremptionis terminum primordiis et mensium signum dares notissimum | Illumina cor hominum absterge sordes mentium resolve culpae vinculum everte moles criminum | Praesta pater piissime patrique compar unice cum spiritu paraclito regnans per omne saeculum
Notes: 
cf. 008283.1 for the 1632 Urban VIII revision of this hymn, which begins the same but contains a few differences
CAO sources: 
SL
CAO: 
8283