But the "moon" we choose for the ecclesiastical calendar is an imaginary body, which is so controlled by specially constructed tables as to be "full" on a day not differing by more than two or three days at most from the date on which the actual moon is full. This may seem, at first sight, a very clumsy arrangement, but it has the advantage of defining the date of Easter precisely, without introducing any question as to the special meridian where the moon might be supposed to be observed. Thus, in 1905, the moon was full at 4{h} 56{m} Greenwich mean time on the morning of March 21. But Easter Day was not fixed for March 26, the next Sunday following that full moon, but a month later, for April 23. For the calendar moon, the imaginary moon, was full on March 20; and it may be added that the actual moon, though full on March 21 for European time, was full on March 20 for American time. There would have been an ambiguity, therefore, if the actual moon had been taken, according to the country in which it was observed, an ambiguity which is got rid of by adopting a technical or imaginary moon. The names given to the different months in Scripture have an interest of their own. For the most part the months are simply numbered; the month of the Passover is the first month, and the others follow, as the second, third, fourth, etc., throughout the year; examples of each occurring right up to the twelfth month. There is no mention of a thirteenth month. But occasionally we find names as well as numbers given to the months. The first of these is Abib, meaning the month of "green ears." This was the first month, the month of the Passover, and it received its name no doubt from the first green ears of barley offered before the Lord during the feast that followed the Passover.