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" Time 60 seconds (sec.) = 1 minute (mm.) 60 minutes = 1 hour (hr.) 24 hours = 1 day 7 days = 1 week 4 weeks = 1 lunar month 365 days = 1 year 366 days = 1 leap year Measurement of Angles 60 seconds (') = 1 minute (') 60 minutes = 1 degree (°) 60 degrees... "
Mental arithmetic; or, A concise system of commercial arithmetic - Page 18
by James Strachan (F.E.I.S.) - 1852 - 92 pages
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Examination essentials

John Robertson (LL.D., of Upton Park sch.) - 1861 - 140 pages
...Foot 27 Cubic Feet . . 1 Cubic Yard TIME. 60 Seconds make 1 Minute 60 Minutes 1 Hour 24 Hours 1 Day 7 Days 1 Week 4 Weeks 1 Lunar Month 365 Days 1 Year • Since 52 Weeks, or 13 Lunar Months, contain 364 Days, these are often reckoned as a Year....
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Nautical Mathematics

Sydney Arthur Walling, John Campbell Hill - Arithmetic - 1943 - 152 pages
...mile = 5280 feet. Time. 60 seconds (sec.) = l minute (min.) 60 minutes ' =lhour(hr.) 24 hours = 1 day 7 days = 1 week 4 weeks = 1 lunar month 365 days =1 year 366 days = 1 leap year Measurement of Angles. 60 seconds (*) = 1 minute (') 60 minutes =1 degree...
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