From the website http://webexhibits.org/calendars/calendar-ancient.html#months we find the following:

In the eighth century B.C.E., civilizations all over the world either discarded or modified their old 360 day calendars.  The 360 day calendars had been in use for the greater part of a millennium. [I will interject here that there was confusion following the massive changes that had  occurred in the solar system, that resulted in an extra 5.25 days in the year, so much so that:] In many places, month lengths immediately after that change were not fixed, but were based instead upon observation of the sky.

There is much lore from ancient Egypt regarding the problems of the priests when confronted with the necessity of seeing what to do with the "extra" 5.25 days in the solar year.

From this website http://www.varchive.org/tac/hezekiah.htm we find this article, entitled The Reign of King Hezekiah:  When Hezekiah fell sick he was promised a grace of fifteen years. The figure fifteen is not arbitrarily chosen. In Worlds in Collision it was brought out that the turbulent events of that time were caused by repeated close approaches of the planet Mars that repeat themselves till today at the same fifteen-year period, called “favorable opposition” (favorable for observation); only twenty-seven centuries ago this phenomenon was much more pronounced—the opposing celestial bodies were at such encounters closer to each other.

From the above, it is seen that there were serious disturbances occurring in the solar system following the events which changed the length of the year.  Chuck Missler has an excellent tape on the Mysteries of Mars, and the solar system disturbances occurring during that era.

Among people who have studied ancient calendars, it is widely accepted, I have thought, that the length of a year was 360 days, and I have always thought of this as an example of the beauty of the highly ordered state of the solar system as created, or perhaps recreated by God after sin entered into the universe.  Some have proposed that in the events of the Apocalypse of Revelation, the solar system will again be rearranged to return the length of earth's year to a perfect 360 days.

Even if one does throw out the 14,000 day period at the Wilderness events early in Israel's history (and I am by no means certain we should!), still, the 38 year arguments cannot be thrown out by any means.  The bottom line is that 2005 will yet prove to be an astonishing year!  ...almost certainly the year we leave.