confirmed by Doug Peck's sailing voyage of 1991. In 1986, Luis Marden of the National Geographic Society applied currents to the first half of the voyage (but not the second half) and determined Samana Cay as the most probable landfall. In 1992, Goldsmith and Richardson used vector average currents (rather than prevailing currents) along with an updated magnetic field, and found a track that ended in the vicinity of Grand Turk Island. In 2004, Keith Pickering applied magnetic declinations from a more modern source and found a track that ended in the vicinity of the Plana Cays. Light seen on the evening preceding the discovery At 10 p.m. on 11 October Columbus saw a light "like a small wax candle that rose and lifted up". He pointed it out to other people on board, some of whom were able to see the light, while others did not. The actual landfall was about 35 miles from the location Columbus saw the light, so if taken that the light was from a ground-based source, then it could not have been from Guanahani, but must have been from another island farther east. For the Plana Cays theory, the light would have been on Mayaguana. For Conception, it could have been on Cat Island, Watlings Island, or Rum Cay. For Caicos, it could have been on Grand Turk. For Cat Island, it could have been on Watlings Island, and for Lignum Vitae Cay it could have been Eleuthera Island. The Watling's, Grand Turk, and Egg Island theories have no ready explanation. Inter-island track Besides the transatlantic track, the other important method for determining the location of Guanahani is the inter-island track, which can be traced either forward (from Guanahani to Cuba) or backward (from Cuba to Guanahani). Given the numerous descriptions of courses, distances, and directions in the log, this method seems more likely to pinpoint the location, and has been by far the method most frequently used by historians. It was common practice among 20th-century historians to refer to the various Bahamian islands visited by Columbus by Roman numerals to avoid confusion: Island I being Guanahani, Island II being the second island visited by Columbus (which he named Santa María de la Concepción); followed by Island III (named Fernandina by Columbus) and Island IV (called Samoete by the indigenous inhabitants and renamed Isabela by Columbus). Following these four islands, Columbus next visited a