例えば、ロンドンは今は朝７時です。

、。

For example, it's currently 7 a.m. in London.

Literal

For-example, London [topic-は] now [topic-は] morning 7-o'clock [copula-です].

The double-は structure: ロンドンは and 今は. The first sets London as topic, the second contrasts the current time implicit against other possible times. A typical time-zone comparison sentence.