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Measure of Time

Month. Weeks. Days. Hours.

Minutes. = 14=28 672 = 40,320 1 = 7 = 168 = 10,080 = 24 = 1,440 = 1 = 60 = 1 = 1= Seconds.

In the year 1582, the fact was observed by Pope Gregory XIII that, in consequence of 2419,200 this discrepancy not having been taken taken into 604,800 account since the commencement of the Ju- 86,400 lian system (see No. 6064), the true time 3,600 exceeded the time as then reckoned by 10 60 days; and therefore ordered the 11th of The year of 365 days is divided into 12 March to be accounted the 21st. The Pope's calendar months, 7 of which have 31 days; 4 edict was generally observed by the nations have 30 days; and 1, February, 28 days. The subject to his authority, but the Protestant solar year consists of 365 days, 5 hours, 48 countries continued the use of the Julian minutes, and 49 seconds; this excess over reckoning. This gave rise to the two modes 365 days, nearly 6 hours, or + day, is allowed of computation still found in Europe, called to accumulate through each 4 years, and provided for every fourth, or leap year, by adding 1 day to February; but as this is adding a trifle too much, every 400 years one leap year is omitted, and this occurs when the year is divisible by 400 without remainder. the old style and new style. The latter was adopted in England in 1752, by making the 1st of September the 12th.

Whenever the date of the year is divisible by 4 without remainder, February has 29 days, and that year is called Bissextile. 6008. Table Showing the Number of Days from any Date in One Month to the Same Date in any Other Month. from To Jan.

Feb.

Mar.

April.

June.

May.

July.

January. 365 31 59 90 120 151 181 212 243 273 304 334 eby.... 334 365 28 59 89 120 150 181 212 242 273 303 March... 306 337 365 31 61 92 122 153 184 214 245 275 April..... 275 306 334 365 30 61 91 122 153 183 214 244 May..... 245 276 304 335 365 31 61 92 123 153 184 214 June.... 214.245 273 304 334365 30 61 92 122 153 183 July..... 184 215 243 274 304 335 365 31 62 92 123 153 August.. 153 184 212 243 273 304 334 365 31 61 92 122 Sept..... 122 153 181 212 242 273 303 334 365 30 61 91 October. 92 123 151 182 212 243 273 304 335 365 31 61 Nov..... 61 92 120 151 181 212 242 273 304 334 365 30 Dec...... 31 62 90 121 151 182 212 243 274 304 335 365 Example: How many days from the 2d of February to the 2d of August? Look for February at the left hand, and August at the top, in the angle is 181. In leap year, add one day if February be included. 6009. Table Showing Difference of Time at 12 o'clock (Noon) at New York, New York. 12.00 Ν. Boston.

Buffalo.......11.40 A. M. Quebec...

Chicago..... ..11.07 .12.12 p. м. ..12.12 66 The geographical or nautical mile, according to Brande, is equivalent to 1.153 statute miles; this would give 2029.3 yards to the nautical mile, 69.18 statute miles to the degree, and about 24.905 miles for the earth's equatorial circumference. According to one of the very best authorities, Chambers' Ency clopædia, the nautical mile contains 2029 yards; on this basis, a degree would measure about 69.17 statute miles, and the earth's circumference about 24.901 statute miles. A great circle of the earth is an imaginary line or belt so drawn round the earth as to divide it into two equal parts or hemispheres; the equator and the ecliptic are great circles. In navigation, sailors measure depth of soundings and short distances by the fathom of 6 feet, and the cable-length of 120 fathoms.