  NectarCAM is a Cherenkov camera which is going to equip the Medium-Sized
Telescopes (MST) of the northern site of the Cherenkov Telescope Array
Observatory (CTAO). NectarCAM is equipped with 265 modules, each consisting of
7 photo-multiplier tubes (PMTs), a Front-End Board and a local camera trigger
system used for data acquisition. This paper addresses the timing performance
of NectarCAM which are crucial to reduce the noise in shower images and improve
image cleaning as well as to discriminate between gamma-ray photons and
cosmic-ray background and finally to allow coincidence identification with
neighbouring telescopes for stereoscopic operations. Verification tests of the
system have been performed in a dark room using various light sources to
illuminate the first NectarCAM unit. The resulting timing precision and
accuracy of the trigger arrival relative to a laser source, of individual and
multiple pixel signals have been studied and are shown to comply to CTAO
requirements.
