This pretty picture, from today’s APOD, shows Venus in proximity to the December moon.
Even after the invention of the chronometer, mariners continued to use the competing method of lunar distance to determine longitude. They measured the angular distance between a bright star or planet and the closest limb of the moon to recover standard time (GMT). During the Napoleonic wars, Royal Navy ships would exchange their estimates of longitude and how they were determined. A Venus lunar was particularly valued as a cross check on their chronometers. “Scientific” Captains of that time (c. 1800) also determined time by observing occulations of Jupiter’s moons. The U.S. Navy dropped the lunar method in the early 1900s by removing the how-to from the 1911(?) edition of The American Practical Navigator.
Those were the days. (Particularly if you didn’t have to to the calculations yourself.)