Show Tk Thu Solar Sote Y Yur Yar r The exact length lengl II of ur the polar year rear or the time t taken liken by the earth to complete com com- one revolution re around the sun son la to days daYL This hl Is slightly less leu than thao 4 days das or the average length a year lear would be If e every fourth year rear were a leap year rear T To approximate to this exact length therefore only 97 leap years lears are provided for tor In each 40 years irs this Is I. accomplished by have hav In Int only days In such years eara as 1000 1100 2100 and 2200 and da days In ID 2000 A whIch bleb Is U exactly by aver KIO |