A verb appearing as G. lûtha- in the Gnomish Lexicon of the 1910s with two meanings: “pass, of time” and “come to pass, occur” (GL/55). It is clearly based on the early root ᴱ√LUHU having to do with time (QL/56).

Neo-Sindarin: The root ᴹ√LU survived in Tolkien’s later writings, so I would retain this verb. However, I would adapt it as ᴺS. lúda- “to pass (of time); to come to pass, occur, *happen”, since -tha was no longer a common verbal suffix in Tolkien’s later writings. I would further assume that it means “pass (of time)” when with a temporal subject: i dhû lúdant “the night passed”. When it has a non-temporal subject it means “come to pass, occur, *happen”: i vereth lúdant orvedui “the feast occurred/happened yesterday”.