When shall these things be?
Matt. xxiv. 3.
See the Note under What, pron., 1.
2. At what time; at, during, or after the time that; at or just after,
the moment that; — used relatively.
Kings may Take their advantage when and how they list.
Daniel.
Book lore ne'er served, when trial came, Nor gifts, when faith was
dead.
J. H. Newman.
3. While; whereas; although; — used in the manner of a conjunction to
introduce a dependent adverbial sentence or clause, having a causal,
conditional, or adversative relation to the principal proposition; as,
he chose to turn highwayman when he might have continued an honest man;
he removed the tree when it was the best in the grounds.