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