PRINCE EDWARD ISLAND CALENDAR. New Year's Day Jan. 1 Epiphany 6 Martyrdom of King Chas. 1.30 Sepluagesima Sunday Feb. 8 Sexagesima Sunday Quinqua. or Shrove Sun. Ash Wednesday St. David March Qua. or 1st Sun. in Lent St. Patrick Princess Louisa's B. D. Annunc , Lady day, Palm Sunday Pr . Leo. Geo. Dun. Albert's Birth D. Good Friday Easter Sunday Low Sunday St. George Princess Alice's B. D Pr . Ar. Wm. Patrick Henry 's Birth Day, Rogation Sunday 17 Day Holy Thur. 21 Birth of Queen Victoria 24 April May 1 May 25 Princess Helena 's Birth Day Restoration of Charles II . 29 Pentecost, Whit Sunday 31 Trinity Sunday June 7 108th Anniver. of the ) Settlement of Halifax J Corpus Christi Acces . of Q. Victoria Proclamation St. Jn. Bapt . Midsum'r D. Coronation , Q. Vic . Pr . Albert's B. D. Aug . St. Michael ) J , Michaelmas Day ] aeVl- All Saints' Day Nov. Birth of Prince of Princess Royal's B. D. First Sunday in Advent St. Andrew St. Thomas Dec . Christmas Day St. Stephen St . John Evangelist TRUE TIME. - Two kinds of time are used in Almanacs—clock or mean¬ time in some, and apparent or sun-time in others. Clock- time is always right, while sun-time varies every day. People generally suppose it is twelve o'clock when the sun is due south, or at a properly made noon-mark. But this is a mistake. The sun is seldom on the meridian at twelve o'clock; indeed, this is the case only on four days' of the year: namely, April 15, June 15, Sep. 1, and Dec. 25. In this Almanac, as in most other Almanacs, the time used is clock lime; and the difference in the time of the sun's coming on the meredian is given in the fifth column; this affords a ready means of obtaining correct time and for setting a clock by using a noon-mark, adding or subtracting as the sun is slow or fast. Old-fashioned Almanacs, which use apparent time, give the rising and setting of the sun's centre, and make no allowance for the effect of refraction of the sun's rays by the atmosphere. The more modern and improved Almanacs, which use clock-Ume, give the rising and set¬ ting of the sun's upper limb; and duly allow for refraction.