What is another word for "when"?

Roget's Thesaurus (1911) lists these synonyms for "when": abnegation, abstain, abstainer, abstemious, abstemiousness, abstinence, abstinent, actual, age, alcoholic, alone, already, and, another, any, aorist, aoristic, are, aurora, being, blush, break, breezy, but, call, century, cockcrow, cockcrowing, compass, crepuscule, crisis, current, dawn, day, daybreak, dayspring, deny, different, driver, dry.