Calculating date/time relative to UTC

[4Eyes]

Folks,

Looking at the helpfile in relation to _Date_Time_GetTimeZoneInformation() gives me a headache.

The first element of the returned array is specified as:

0 - Daylight savings time is not used in the current time zone

1 - Daylight savings time operating with standard time

2 - Daylight savings time operating with daylight savings time

I understand:

'0 - Daylight savings time is not used in the current time zone' and

'2 - Daylight savings time operating with daylight savings time'

but what is 'Daylight savings time operating with standard time'? How can you have daylight savings time with no change to the local time or am I misinterpreting the explanation? I'm really tired so I assume that is the actual answer.

Blah... meant to post this in the General help and support forum.

Edited November 16, 2012 by 4Eyes

[danielkza]

0: Timezone doesn't have DST at all.

1: Timezone has DST, but it is not in effect.

2: Timezone has DST, and it is in effect.

[4Eyes]

danielkza,

O, I C. Ta.

[nergmlam]

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Func _TimeConvert_GetDaylightSavingTime($__iShow)
    ;    Please don't remove this line - © Copyright 2013: J. Malmgren, wwww.tryware.dk
    ;    Get SystemTime, convert it with Daylight saving time (DST), and convert it according to $__iShow
    ;    Return result:        Syntax:
    ;    YYYYMMDD HH:MM:SS    $__iShow =1
    ;    YYYYMMDD            $__iShow =2
    ;    HH:MM:SS            $__iShow =3
    ;    HHMMSS                $__iShow =4
    ;
    ;    Examples:
    ;
    ;    MsgBox(0,"YYYYMMDD HH:MM:SS",_TimeConvert_GetDaylightSavingTime(1))
    ;    MsgBox(0,"YYYYMMDD",_TimeConvert_GetDaylightSavingTime(2))
    ;    MsgBox(0,"HH:MM:SS",_TimeConvert_GetDaylightSavingTime(3))
    ;    MsgBox(0,"HHMMSS",_TimeConvert_GetDaylightSavingTime(4))
    ;    MsgBox(0,"ERROR:",_TimeConvert_GetDaylightSavingTime(5))

    Local $__sGetSystemTime = _Date_Time_GetSystemTime()
    Local $__sGetDstTime  = _Date_Time_SystemTimeToTzSpecificLocalTime(DllStructGetPtr($__sGetSystemTime))
    Local $__iGetTime = _Date_Time_SystemTimeToDateTimeStr($__sGetDstTime)

    Local $__sTime                    ;    1234567890123456789
                                    ;    12/31/2013 23:23:22

    Switch $__iShow
        Case 1                        ;    YYYYMMDD HH:MM:SS
            $__sTime = StringMid($__iGetTime, 7, 4) & ":" & StringMid($__iGetTime, 1, 2) & ":" & StringMid($__iGetTime, 4, 2)
            $__sTime = $__sTime  & " " & StringMid($__iGetTime, 12, 3) & StringMid($__iGetTime, 15, 3) & StringMid($__iGetTime, 18, 2)

        Case 2                        ;    YYYYMMDD
            $__sTime = Int(StringMid($__iGetTime, 7, 4) & StringMid($__iGetTime, 1, 2) & StringMid($__iGetTime, 4, 2))

        Case 3                        ;    HH:MM:SS
            $__sTime = StringMid($__iGetTime, 12, 3) & StringMid($__iGetTime, 15, 3) & StringMid($__iGetTime, 18, 2)

        Case 4                        ;    HHMMSS
            $__sTime = Int(StringMid($__iGetTime, 12, 2) & StringMid($__iGetTime, 15, 2) & StringMid($__iGetTime, 18, 2))

        Case Else
            $__sTime = "SYNTAX ERROR: _TimeGetDaylightSavingTime = 1, 2, 3 or 4"
    EndSwitch

    Return $__sTime
EndFunc

Edited December 2, 2013 by Melba23
Added code tags

[Melba23]

nergmlam,

When you post code please use Code tags - see here how to do it. Then you get a scrolling box and syntax colouring as you can see above now I have added the tags.

M23

Edit: And I see you have posted this same function in several posts - I have deleted all the other instances. Next time just add it to the "Examples" section and please do not multi-post like that again!

Edited December 2, 2013 by Melba23
Typo