Unix2DateTime

Returns a list of integers comprising the date [year, month, day, hour, minute, second].

Returns an integer comprising the date in number of seconds elapsed since 00:00 hours, Jan 1, 1970 UTC.

Returns a string comprising the date as DD-MON-YYYY.

Returns a string comprising the time as HH24:MI:SS.

/////////////////////////////////////////////////////////////////////
// Script Library Contribution by Flennan Roffo
// Logic Scripted Products & Script Services
// Peacock Park (183,226,69)
// (c) 2007 - Flennan Roffo
//
// Distributed as GPL, donated to wiki.secondlife.com on 19 sep 2007
//
// SCRIPT:  Unix2DateTimev1.0.lsl
//
// FUNCTION: 
// Perform conversion from return value of llGetUnixTime() to
// date and time strings and vice versa.
//
// USAGE:
// list timelist=Unix2DateTime(llGetUnixTime());
// llSay(0, "Date: " +  DateString(timelist); // displays date as DD-MON-YYYY
// llSay(0, "Time: " +  TimeString(timelist); // displays time as HH24:MI:SS
/////////////////////////////////////////////////////////////////////
 
///////////////////////////// Unix Time conversion //////////////////
 
integer DAYS_PER_YEAR        = 365;           // Non leap year
integer SECONDS_PER_YEAR     = 31536000;      // Non leap year
integer SECONDS_PER_DAY      = 86400;
integer SECONDS_PER_HOUR     = 3600;
integer SECONDS_PER_MINUTE   = 60;
 
list MonthNameList = [  "JAN", "FEB", "MAR", "APR", "MAY", "JUN", 
                        "JUL", "AUG", "SEP", "OCT", "NOV", "DEC" ];
 
////////////////////////////// LeapYear() /////////////////////////////
 
integer LeapYear(integer year)
{
    if (year % 4 == 0)
    {
        if (year % 100 == 0)
        {
            if (year % 400 == 0)
            {
                return 1;
            }
            else
            {
                return 0;
            }
        }
        else
        {
            return 1;
        }
    }
    else
    {
        return 0;
    }
}
 
////////////////////////////// DaysPerMonth() ///////////////////////////////////////
 
integer DaysPerMonth(integer year,integer month)
{
    if (month < 8)
    {
        if (month % 2 == 0)
        {
            if (month == 2)
            {
                if (LeapYear(year))
                {
                    return 29;
                }
                else
                {
                    return 28;
                }
            }
            else
            {
                return 30;
            }
        }
        else
        {
            return 31;
        }
    }
    else
    {
        if (month % 2 == 0)
        {
            return 31;
        }
        else
        {
            return 30;
        }
    }
}
 
/////////////////////////// DaysPerYear() ////////////////////////////////////
 
integer DaysPerYear(integer year)
{
    if (LeapYear(year))
        return DAYS_PER_YEAR + 1;
    else
        return DAYS_PER_YEAR;
}
 
///////////////////////////////////////////////////////////////////////////////////////
// Convert Unix time (integer) to a Date and Time string
///////////////////////////////////////////////////////////////////////////////////////
 
/////////////////////////////// Unix2DataTime() ///////////////////////////////////////
 
list Unix2DateTime(integer unixtime)
{
    integer days_since_1_1_1970     = unixtime / SECONDS_PER_DAY;
    integer day = days_since_1_1_1970 + 1;
    integer year  = 1970;
    integer days_per_year = DaysPerYear(year);
 
    while (day > days_per_year)
    {
        day -= days_per_year;
        ++year;
        days_per_year = DaysPerYear(year);
    }
 
    integer month = 1;
    integer days_per_month = DaysPerMonth(year,month);
 
    while (day > days_per_month)
    {
        day -= days_per_month;
 
        if (++month > 12)
        {    
            ++year;
            month = 1;
        }
 
        days_per_month = DaysPerMonth(year,month);
    }
 
    integer seconds_since_midnight  = unixtime % SECONDS_PER_DAY;
    integer hour        = seconds_since_midnight / SECONDS_PER_HOUR;
    integer second      = seconds_since_midnight % SECONDS_PER_HOUR;
    integer minute      = second / SECONDS_PER_MINUTE;
    second              = second % SECONDS_PER_MINUTE;
 
    return [ year, month, day, hour, minute, second ];
}
 
///////////////////////////////// MonthName() ////////////////////////////
 
string MonthName(integer month)
{
    if (month >= 0 && month < 12)
        return llList2String(MonthNameList, month);
    else
        return "";
}
 
///////////////////////////////// DateString() ///////////////////////////
 
string DateString(list timelist)
{
    integer year       = llList2Integer(timelist,0);
    integer month      = llList2Integer(timelist,1);
    integer day        = llList2Integer(timelist,2);
 
    return (string)day + "-" + MonthName(month - 1) + "-" + (string)year;
}
 
///////////////////////////////// TimeString() ////////////////////////////
 
string TimeString(list timelist)
{
    integer hour        = llList2Integer(timelist,3);
    integer minute      = llList2Integer(timelist,4);
    integer second      = llList2Integer(timelist,5);
    string  hourstr     = (string)hour;
    string  minutestr   = (string)minute;
    string  secondstr   = (string)second;
 
    if (hour < 10)      hourstr     = "0" + hourstr;
    if (minute < 10)    minutestr     = "0" + minutestr;
    if (second < 10)    secondstr    = "0" + secondstr;
    return hourstr + ":" + minutestr + ":" + secondstr;
}
 
///////////////////////////////////////////////////////////////////////////////
// Convert a date and time to a Unix time integer
///////////////////////////////////////////////////////////////////////////////
 
////////////////////////// DateTime2Unix() ////////////////////////////////////
 
integer DateTime2Unix(integer year, integer month, integer day, integer hour, integer minute, integer second)
{
	integer time = 0;
	integer yr = 1970;
	integer mt = 1;
	integer days;
 
	while(yr < year)
	{
		days = DaysPerYear(yr++);
		time += days * SECONDS_PER_DAY;
	}
 
	while (mt < month)
	{
		days = DaysPerMonth(year,mt++);
		time += days * SECONDS_PER_DAY;
	}
 
	days = day - 1;
	time += days * SECONDS_PER_DAY;
	time += hour * SECONDS_PER_HOUR;
	time += minute * SECONDS_PER_MINUTE;
	time += second;
 
	return time;
}
//////////////////////////////////////////////
// End Unix2DateTimev1.0.lsl
//////////////////////////////////////////////

Trivial example to display data and time converted from system time when touched.

default
{
    state_entry()
    {
        llSay(0, "Hello, Avatar!");
    }
 
    touch_start(integer total_number)
 
    {
        llOwnerSay("Date: " +  DateString(Unix2DateTime(llGetUnixTime()))); // displays date as DD-MON-YYYY
        llOwnerSay("Time: " +  TimeString(Unix2DateTime(llGetUnixTime()))); // displays time as HH24:MI:SS
    }
}