The coming of this “great storm, such an one as never had been known in all the land” was on a very specific date. Although that might appear as a way to firmly date Jesus’s death in the Old World, there are two issues in making a direct correlation. The first is that we do not know when the Nephites considered their new year to begin. There is no reason to assume that it must have been the same calendar as we use.
Secondly, the correlation of Nephite years to our years appears to have some difficulties that might be explained by a different method of calculating what a year meant. Where we use three hundred and sixty-five days, with an extra day every four years, it is possible that the Nephites began tracking years according to a lunar calendar, which was prevalent in Jerusalem at the time they left. In the New World, they may have adapted to the more pan-Mesoamerican use of a three-hundred-and-sixty-day calendar (which was one of the available calendars; others were also used). This shorter year appears to allow the important events that can be timed to the Old World to fit better. Those two events are the departure from Jerusalem, which can be dated from Old World records where we know what year in our calendar corresponds to the first year of the rein of Zedekiah. The birth of Christ is the second somewhat fixed point, although there are scholarly discussions about precisely how to correlate that event to our calendar.