kburney
asked on
How do I get the Time in UNIX Time format from within an ASP page?
I need to compare a UNIX Time formatted value with the current time. How do I get the UNIX time format for the current time from within an ASP. UNIX time format is the number of seconds since UTC 1/1/70.
Thanks in advance
Kevin Burney
Thanks in advance
Kevin Burney
Actually with your requirement it should be like
theDate= cdate("1/1/70")
DiffASecond = "Seconds from 1/1/70: " & DateDiff("s", Now, theDate
Response.Write DiffASecond
theDate= cdate("1/1/70")
DiffASecond = "Seconds from 1/1/70: " & DateDiff("s", Now, theDate
Response.Write DiffASecond
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Knew you'd get there eventually jitganguly :-)
Hey, I am here after a long time boss
ASKER
The answer is exactly what I was looking for, thank you. Now I have another very minor issue and that is how do I get the Now to bring back the time in GMT (UTC)? The value that I am comparing against (the UNIX formatted time) is in GMT. I want this code to be portable across time zones.
Thanks
Kevin
Thanks
Kevin
You can use DateAdd function to get GMT time. If you are in USA EST ( I am at NY area), then you could subtract -5 with dateadd function like
NewDate = DateAdd("h", -5, "31-Jan-95")
NewDate = DateAdd("h", -5, "31-Jan-95")
and I don't think VBScript has UTC date funtion. But Javascript has.
You may want to pass the ASP VBScript var to Javascript to get UTC Date Format.
Check out this Jscript example from MSDN
Example
The following example illustrates the use of the UTC method.
function DaysBetweenDateAndNow(yr, mo, dy){
var d, r, t1, t2, t3; //Declare variables.
var MinMilli = 1000 * 60 //Initialize variables.
var HrMilli = MinMilli * 60
var DyMilli = HrMilli * 24
t1 = Date.UTC(yr, mo - 1, dy) //Get milliseconds since 1/1/1970.
d = new Date(); //Create Date object.
t2 = d.getTime(); //Get current time.
if (t2 >= t1)
t3 = t2 - t1;
else
t3 = t1 - t2;
r = Math.round(t3 / DyMilli);
return(r); //Return difference.
}
You may want to pass the ASP VBScript var to Javascript to get UTC Date Format.
Check out this Jscript example from MSDN
Example
The following example illustrates the use of the UTC method.
function DaysBetweenDateAndNow(yr, mo, dy){
var d, r, t1, t2, t3; //Declare variables.
var MinMilli = 1000 * 60 //Initialize variables.
var HrMilli = MinMilli * 60
var DyMilli = HrMilli * 24
t1 = Date.UTC(yr, mo - 1, dy) //Get milliseconds since 1/1/1970.
d = new Date(); //Create Date object.
t2 = d.getTime(); //Get current time.
if (t2 >= t1)
t3 = t2 - t1;
else
t3 = t1 - t2;
r = Math.round(t3 / DyMilli);
return(r); //Return difference.
}
<snicker...>
Man I'm getting slow in my old age...
Man I'm getting slow in my old age...
ASKER
That is how I am currently doing it. I was looking for a way to make the ASP work in any time zone at any time of the year (i.e. Daylight savings). Isn't there some way I can Add/Subract the current machine's timezone offset? If so how do I reference it.
Thanks
Kevin
Thanks
Kevin
ASKER
Sorry, I had not refreshed the screen since your last post.
I had found the JavaScript code to do this and was wondering if I could access the Timezone Offset from VBScript. The sample javascript that I had found has reference to the Timezone offset. The code is below.
gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
<SCRIPT LANGUAGE=JAVASCRIPT>
<!-- hide from old browsers
function gmtClock(){
/* Basic gmt clock /*
time = new Date()
gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
gmtTime = new Date(gmtMS)
hour = gmtTime.getHours()
minute = gmtTime.getMinutes()
second = gmtTime.getSeconds()
temp = "" + ((hour < 10) ? "0" : "") + hour
temp += ((minute < 10) ? ":0" : ":") + minute
temp += ((second < 10) ? ":0" : ":") + second
document.clockForm.digits.
setTimeout("GMTClock()",10
}
//-->
</SCRIPT>
<BODY ONLOAD="gmtClock()">
<!-- -->
<FORM NAME="clockForm">
<FONT face="Times new Roman" size=2>
<INPUT TYPE="Text" NAME="Digits" SIZE=8>
GMT
</FONT>
</FORM><!-- -->
I had found the JavaScript code to do this and was wondering if I could access the Timezone Offset from VBScript. The sample javascript that I had found has reference to the Timezone offset. The code is below.
gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
<SCRIPT LANGUAGE=JAVASCRIPT>
<!-- hide from old browsers
function gmtClock(){
/* Basic gmt clock /*
time = new Date()
gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
gmtTime = new Date(gmtMS)
hour = gmtTime.getHours()
minute = gmtTime.getMinutes()
second = gmtTime.getSeconds()
temp = "" + ((hour < 10) ? "0" : "") + hour
temp += ((minute < 10) ? ":0" : ":") + minute
temp += ((second < 10) ? ":0" : ":") + second
document.clockForm.digits.
setTimeout("GMTClock()",10
}
//-->
</SCRIPT>
<BODY ONLOAD="gmtClock()">
<!-- -->
<FORM NAME="clockForm">
<FONT face="Times new Roman" size=2>
<INPUT TYPE="Text" NAME="Digits" SIZE=8>
GMT
</FONT>
</FORM><!-- -->
Function DiffADate(theDate)
DiffADate = "Days from today: " & DateDiff("s", Now, theDate)
End Function
MSDN Manual
Returns the number of intervals between two dates.
DateDiff(interval, date1, date2 [,firstdayofweek[, firstweekofyear]])
The DateDiff function syntax has these parts:
Arguments
interval
Required. String expression that is the interval you want to use to calculate the differences between date1 and date2. See Settings section for values.
date1, date2
Required. Date expressions. Two dates you want to use in the calculation.
firstdayofweek
Optional. Constant that specifies the day of the week. If not specified, Sunday is assumed. See Settings section for values.
firstweekofyear
Optional. Constant that specifies the first week of the year. If not specified, the first week is assumed to be the week in which January 1 occurs. See Settings section for values.