WEEKNUMBER


Main5systems
2028/12/23(YY/MM/DD)
WEEKNUMBER OF YEAR
A-TYPE ISO(janyary1)
MONDAY START
2028 week52
[12/18(MON)-12/24(SUN)
★B-TYPE ISO(janyary4)
ISO8601 STANDARD
MONDAY START
2028 week51
[12/18(MON)-12/24(SUN)
★C-TYPE USA(january1)
SUNDAY START
2028 week52
[12/17(SUN)-12/23(SAT)]
D-TYPE USA(january4)
SUNDAY START
2028 week51
[12/17(SUN)-12/23(SAT)]
★E-TYPE SAT(january1)
SATURDAY START
2028 week52
[12/23(SAT)-12/29(FRI)

2028/12(USA)
SUN MON TUE WED THU FRI SAT
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31

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