  The hot-Neptune HD219666b (= TOI-118.01) was an early discovery from Sector 1
of the TESS transit survey. Being a rare "Neptune desert" planet, and
transiting a bright, V = 9.9 star, it is a prime target for further study
including atmospheric characterisation. Targeting exoplanet transits with major
facilities such as HST and the imminent JWST depends on an accurate ephemeris.
Here we report a recovery of the transit in WASP-South data, enabling an
ephemeris from data spanning 8 years that has a period uncertainty which is
smaller by a factor 60 compared to the discovery paper.
