“All Fools' Day” (now known as April Fools' Day which falls on 1 April) was Swift’s favourite of holidays and he often used this day to aim his biting satirical wit at non-believers in an attempt to “make sin and folly bleed.” Disgruntled by Partridge’s sarcastic attack about the “"infallible" Church” written in his 1708 issue of Merlinus Almanac, Swift projected carefully 3 letters and one Eulogy as an elaborate plan to “predict” Partridge’s “"infallible" death” to be revealed on April 1, All Fools' Day.