Can tell time by the sun, smells vampire

For long, anxious seconds, Larten searched for his foes and readied
himself for battle. Then he caught a scent and his nose crinkled with
disgust. He rose and brushed dirt from his trousers. He dug out his watch
and checked the time – it was for show, as Seba had taught him to read the
time based on the position of the sun and stars – then coolly glanced at the
sky and sniffed.

“My watch has stopped, Tanish,” he called. “If it’s broken, I’ll have the
price of a new one out of you.”

Laughter greeted this statement and four vampires lurched out of a shed.
One was a sheepish-looking Wester Flack. The others were Yebba, Zula
Pone and Tanish Eul, the vampire who had originally given Larten his
nickname.

“The same old Quicksilver,” Tanish snorted admiringly.

***

The Saga of Larten Crepsley: Ocean of Blood, Chapter 2