53
The week with the year’s first Thursday in it (the formal ISO definition),
The week with 4
th
January in it,
The first week with the majority (four or more) of its days in the starting year,
and
The week starting with the Monday in the period 29 December – 4 January.
If first January is on a Monday, Tuesday, Wednesday or Thursday, it is in
week 01. If first January is on a Friday, Saturday or Sunday, it is in week 52
or 53 of the previous year. 28
th
December is always in the last week of its
year.
— Sunday 1 January 1995 is identified by the calendar date
[1995-01-01] and week date [1994-W52-7]
— Tuesday 31 December 1996 is identified by the calendar date
[1996-31-12] and week date [1997-W01-2]
SSSSS: 5 unique hexadecimal codes, by manufacturer/factory/product base, start
form 00001 and reset every week.
Hexadecimal numeral system uses 16 digits, they are 0~9, A, B, C, D, E
and F.
Maintain one and only one counter to generate sequence numbers at a
manufacture site in different factory (Factory1/Factory2) and different
product (NB,/Tablet/SHH) that with a unique MM code.
First digit of SSSSS cannot be F, so the maximum value of SSSSS is Hex
(EFFFF) = 983039.
(If the SSSSS is larger than Hex (F4240) = 999999, you cannot transfer it to right
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