CFLib.org – Common Function Library Project

Description:
Pass me a timezone, and I'll convert my server date/time to the preferred timezone's date/time and pass it back to you.

Return Values:
Returns a date/time value.

Example:

<cfoutput>
    Central: #getNorthAmericanTimeStamp('central')#<br />
    Pacific: #dateFormat(getNorthAmericanTimeStamp('pacific'), 'mm/dd/yyyy')#<br />
    Hawaii: #timeFormat(getNorthAmericanTimeStamp('hawaii'), 'h:mm:ss tt')#
</cfoutput>

Parameters:

Full UDF Source:

<!---
 I convert the server date/time to any North American timezone date/timestamp.
 
 @param timezone      The name of the timezone. (Required)
 @return Returns a date/time value. 
 @author Stephen Withington (steve@stephenwithington.com) 
 @version 1, November 26, 2010 
--->
<cffunction name="getNorthAmericanTimeStamp" returntype="string" output="false" access="remote">
    <cfargument name="timeZone" type="string" required="false" default="central" />
    <cfscript>        
        var local = structNew();
        local.t = structNew();
        local.t.dts = now();
        local.t.tzi = getTimeZoneInfo();
        local.t.utc = dateAdd("s", local.t.tzi.utcTotalOffset, local.t.dts);
        local.timeZones = "newfoundland,atlantic,eastern,central,mountain,pacific,hawaii,utc";

        if ( local.t.tzi.isDSTon ) {
            local.t.newfoundland = dateAdd("n", -150, local.t.utc);            
            local.t.atlantic = dateAdd("h", -3, local.t.utc);
            local.t.eastern = dateAdd("h", -4, local.t.utc);
            local.t.central = dateAdd("h", -5, local.t.utc);
            local.t.mountain = dateAdd("h", -6, local.t.utc);
            local.t.pacific = dateAdd("h", -7, local.t.utc);
            local.t.hawaii = dateAdd("h", -9, local.t.utc);    

        } else {
            local.t.newfoundland = dateAdd("n", -210, local.t.utc);
            local.t.atlantic = dateAdd("h", -4, local.t.utc);
            local.t.eastern = dateAdd("h", -5, local.t.utc);
            local.t.central = dateAdd("h", -6, local.t.utc);
            local.t.mountain = dateAdd("h", -7, local.t.utc);
            local.t.pacific = dateAdd("h", -8, local.t.utc);
            local.t.hawaii = dateAdd("h", -10, local.t.utc);
        };
                    
        if ( listFindNoCase(local.timeZones, arguments.timeZone, ",") ) {
            switch(arguments.timeZone) {
                case "newfoundland":
                    return local.t.newfoundland;
                    break;
                case "atlantic":
                    return local.t.atlantic;
                    break;
                case "eastern":
                    return local.t.eastern;
                    break;
                case "central":
                    return local.t.central;
                    break;
                case "mountain":
                    return local.t.mountain;
                    break;
                case "pacific":
                    return local.t.pacific;
                    break;
                case "hawaii":
                    return local.t.hawaii;
                    break;
                case "utc":
                    return local.t.utc;
                    break;
                default:
                    return local.t.eastern;
            };
        } else {
            return local.t.eastern;
        };    
    </cfscript>
</cffunction>