| 2064/9/20(YY/MM/DD) WEEKNUMBER OF YEAR  | 
    |
| A-TYPE ISO(janyary1) MONDAY START  | 
      2064 week38 [9/15(MON)-9/21(SUN)  | 
    
| ★B-TYPE ISO(janyary4) ISO8601 STANDARD MONDAY START  | 
      2064 week38 [9/15(MON)-9/21(SUN)  | 
    
| ★C-TYPE USA(january1) SUNDAY START  | 
      2064 week38 [9/14(SUN)-9/20(SAT)]  | 
    
| D-TYPE USA(january4) SUNDAY START  | 
      2064 week38 [9/14(SUN)-9/20(SAT)]  | 
    
| ★E-TYPE SAT(january1) SATURDAY START  | 
      2064 week39 [9/20(SAT)-9/26(FRI)  | 
    
| 2064/9(USA) | |||||||
| SUN | MON | TUE | WED | THU | FRI | SAT | |
| ❶ | 1 | 2 | 3 | 4 | 5 | 6 | |
| ❷ | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 
| ❸ | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 
| ❹ | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 
| ❺ | 28 | 29 | 30 | ||||
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