function worldClock(zone, region){
	var dst = 0
	var time = new Date()
	var gmtMS = time.getTime() + (time.getTimezoneOffset() * 60000)
	var gmtTime = new Date(gmtMS)
	var day = gmtTime.getDate()
	var month = gmtTime.getMonth()
	var year = gmtTime.getYear()
		if(year < 1000){
			year += 1900
		}
	var monthArray = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December")
	var daysOfWeek = new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
	var monthDays = new Array("31", "28", "31", "30", "31", "30", "31", "31", "30", "31", "30", "31")
		
		if (year%4 == 0){
			monthDays = new Array("31", "29", "31", "30", "31", "30", "31", "31", "30", "31", "30", "31")
		}
		
		if(year%100 == 0 && year%400 != 0){
			monthDays = new Array("31", "28", "31", "30", "31", "30", "31", "31", "30", "31", "30", "31")
		}

	var hr = gmtTime.getHours() + zone
	var min = gmtTime.getMinutes()
	var sec = gmtTime.getSeconds()

	if (hr >= 24){
		hr = hr-24
		day -= -1
		}
		
	if (hr < 0){
		hr -= -24
		day -= 1
		}
		
	if (hr < 10){
		hr = "0" + hr
		}
		
	if (min < 10){
		min = "0" + min
		}
		
	if (sec < 10){
		sec = "0" + sec
		}
		
	if (day <= 0){
		if (month == 0){
			month = 11
			year -= 1
			}
		else{
			month = month -1
			}
		day = monthDays[month]
	}

	if(day > monthDays[month]){
		day = 1
		if(month == 11){
			month = 0
			year -= -1
			}
		else{
			month -= -1
			}
	}

	if (region == "Europe"){
		var startDST = new Date()
		var endDST = new Date()
		startDST.setMonth(2)
		startDST.setHours(1)
		startDST.setDate(31)
		var dayDST = startDST.getDay()
		startDST.setDate(31-dayDST)
		endDST.setMonth(9)
		endDST.setHours(0)
		endDST.setDate(31)
		dayDST = endDST.getDay()
		endDST.setDate(31-dayDST)
		var currentTime = new Date()
		currentTime.setMonth(month)
		currentTime.setYear(year)
		currentTime.setDate(day)
		currentTime.setHours(hr)
		if(currentTime >= startDST && currentTime < endDST){
			dst = 1
			}
	}
	
	if (dst == 1){
		hr -= -1
		if (hr >= 24){
			hr = hr-24
			day -= -1
			}
		if (hr < 10){
			hr = " " + hr
			}
		if(day > monthDays[month]){
			day = 1
			if(month == 11){
				month = 0
				year -= -1
				}
			else{
				month -= -1
				}
			}
	return day + " " + monthArray[month] + " " + year + ", " + hr + ":" + min + " DST"
	}
	else{
		return day + " " + monthArray[month] + " " + year + ", " + hr + ":" + min
	}
}

function worldClockZone(){
document.getElementById("Brussels").innerHTML = "Brussels: " + worldClock(1, "Europe")
document.getElementById("Jakarta").innerHTML = "Jakarta: " + worldClock(7, "Jakarta")
setTimeout("worldClockZone()", 1000)
}
window.onload=worldClockZone;

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