Gregorian - Monday-based week with week numbers
     September 2006    
   Mo Tu We Th Fr Sa Su
35              1  2  3 
36  4  5  6  7  8  9 10 
37 11 12 13 14 15 16 17 
38 18 19 20 21 22 23 24 
39 25 26 27 28 29 30    
                        
Gregorian - Sunday-based week with week numbers
     September 2006    
   Su Mo Tu We Th Fr Sa
35                 1  2 
36  3  4  5  6  7  8  9 
37 10 11 12 13 14 15 16 
38 17 18 19 20 21 22 23 
39 24 25 26 27 28 29 30 
                        
Julian - Monday-based week with week numbers
        September 2006        
   Mon Tue Wed Thu Fri Sat Sun
35                 244 245 246 
36 247 248 249 250 251 252 253 
37 254 255 256 257 258 259 260 
38 261 262 263 264 265 266 267 
39 268 269 270 271 272 273     
                               
Julian - Sunday-based week with week numbers
        September 2006        
   Sun Mon Tue Wed Thu Fri Sat
35                     244 245 
36 246 247 248 249 250 251 252 
37 253 254 255 256 257 258 259 
38 260 261 262 263 264 265 266 
39 267 268 269 270 271 272 273