One holiday that has six letters is "Easter." It is a Christian holiday celebrating the resurrection of Jesus Christ and typically falls in spring. Other six-letter holidays include "Diwali," a Hindu festival of lights, and "Ramadan," a month of fasting observed by Muslims.
Their is no holiday with four letters. The fourth of July has a four letter word in it.
Those letters spell holiday.
Those letters spell Holland.
Words that can be made from the letters in 'holiday' are:aadaidaildailydaydodoilyhahadhailhayhihidhohodholdholyIidladladylaidlaylidloloadohoilold
Noel (Christmas) is one holiday with four letters.
Those letters spell holiday.
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The English word that is obtained from the letters laohyid is holiday.
Holidays with five letters are Arbor Day or Labor Day.
Tanabata Festival in Japan.
Valentines Day