523L4OS

523L4OS is a NROS series create by me(Mango523WNR or MangoL4, MangoL4 is another name of Mango523WNR)

The format of 523L4OS
Normal:

523L[OS Number] [Type Letter][Version Number]

(If [Version Number]≤0, Not Use [Type Letter])

Year Series:

523L[OS Number] #[2nd Number]

(For 9x, Year=[2nd Number]+100*int(0.01*(Year of 523L[OS Number] 0))

523L[OS Number] 0 ##[2nd Number]

(For non-9x, Year=[2nd Number])

523L[OS Number] 0 T#[2nd Number]

(For Server, Year=[2nd Number])

XP Series:

523L[OS Number] [1st Part][2nd Part]

Type Letter
L:Equals to Home Edition

C:Equals to Simple Edition

A:Equals to Pro Edition

T:Equals to Server Edition

How To Calculate Time
For [OS Number], The Default Value(OSND) is 4

For [Version Number], The Default Value(VND) is -4

For Time(non XP Series), The Default Value(TDV) is UTC 2005/3/12 14:52:00

For Time(XP Series), The Default Value(XDV) is UTC 2022/7/17 14:52:00

Normal:Time=TDV+1056 Days*([OS Number]+[Version Number]-OSND-VND)(If One of [Type Letter] is C, Plus 1 Year(If the Date of Not C version is UTC Feb 29, You will get UTC March 1, a year after the Not C version was released)

Year Series:Year=[2nd Number](For non-9x), Year=[2nd Number]+100*int(0.01*(Year of 523L[OS Number] 0)(For 9x)

XP Series:Time=XDV+([1st Part]-10)*[2nd Part] The composition of the 1st Part is same as Roman Number