spät here shows late/leter ,how come in this sentence its saying "What time is it? " Can anybody tell me the mechanism here.
A literal translation would be ""How late is it?". This is an example, however, where we have the opportunity to learn how a German would naturally ask this question.
If we translated the English phrase "What time is it?" into something like Welche Uhrzeit ist es? we would be immediately recognised as foreign :)