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tz.html
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<!doctype html>
<html lang="en">
<head>
<title>Slot selector</title>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.25.3/moment-with-locales.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.41/moment-timezone-with-data-10-year-range.min.js" integrity="sha512-B8w/upS84/1wUAAjoLU3IgBzpPZ4buxgBWRZhlYhi4JBqcmm3uvx5sok/4+9HOQHuxiOlVaIfKkkks7YU5zAOQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<div class="container" style="max-width: 700px;">
<div class="card" style="margin-top: 50px;">
<h5 class="card-header">Time slot selector</h5>
<div class="card-body">
<div>
<br/>Students and Teaching Assistants work on <span style = "color:#f0ba7d"><b>synchronous coursework</b></span>
and <span style = "color:#e18256"><b>projects</b></span> in times below. Professional development activities take place during
<span style = "color:#e18256">project</span> time only.
See times for coursework and projects in each slot below
in your local timezone. <br>
<br>
</div>
<span style = "font-size:13pt; color:#313f76; font-weight:bold"><i> CHOOSE YOUR TIMEZONE (based on July 2024):</i></span> <select class="js-Selector" onchange="onChange()" id='timezone'>
</select>
<br><br>
<p><span style = "font-size:13pt;"><i> Course times:</i></span></p>
<div id="times">
</div>
<div>
<br/>People in your timezone often choose the slot in <b>bold</b>,
but you can choose whichever slot best fits your schedule!
</div>
<div>
<br>
* If you have issues with the website please try the Chrome browser.
</div>
<script>
// Adapted from https://matall.in/posts/building-an-usable-timezone-selector/
const _t = (s) => {
if (i18n !== void 0 && i18n[s]) {
return i18n[s];
}
return s;
};
const timezones = [
"Etc/GMT+12",
"Pacific/Midway",
"Pacific/Honolulu",
"America/Juneau",
"America/Dawson",
"America/Boise",
"America/Chihuahua",
"America/Phoenix",
"America/Chicago",
"America/Regina",
"America/Mexico_City",
"America/Belize",
"America/Detroit",
"America/Indiana/Indianapolis",
"America/Bogota",
"America/Glace_Bay",
"America/Caracas",
"America/Santiago",
"America/St_Johns",
"America/Sao_Paulo",
"America/Argentina/Buenos_Aires",
"America/Godthab",
"Etc/GMT+2",
"Atlantic/Azores",
"Atlantic/Cape_Verde",
"Europe/London",
"Africa/Casablanca",
"Atlantic/Canary",
"Europe/Belgrade",
"Europe/Sarajevo",
"Europe/Brussels",
"Europe/Amsterdam",
"Africa/Algiers",
"Europe/Bucharest",
"Africa/Cairo",
"Europe/Helsinki",
"Europe/Athens",
"Asia/Jerusalem",
"Africa/Harare",
"Europe/Moscow",
"Asia/Kuwait",
"Africa/Nairobi",
"Asia/Baghdad",
"Asia/Tehran",
"Asia/Dubai",
"Asia/Baku",
"Asia/Kabul",
"Asia/Yekaterinburg",
"Asia/Karachi",
"Asia/Kolkata",
"Asia/Kathmandu",
"Asia/Dhaka",
"Asia/Colombo",
"Asia/Almaty",
"Asia/Rangoon",
"Asia/Bangkok",
"Asia/Krasnoyarsk",
"Asia/Shanghai",
"Asia/Kuala_Lumpur",
"Asia/Taipei",
"Australia/Perth",
"Asia/Irkutsk",
"Asia/Seoul",
"Asia/Tokyo",
"Asia/Yakutsk",
"Australia/Darwin",
"Australia/Adelaide",
"Australia/Sydney",
"Australia/Brisbane",
"Australia/Hobart",
"Asia/Vladivostok",
"Pacific/Guam",
"Asia/Magadan",
"Pacific/Fiji",
"Pacific/Auckland",
"Pacific/Tongatapu"
];
const i18n = {
"Etc/GMT+12": "International Date Line West",
"Pacific/Midway": "Midway Island, Samoa",
"Pacific/Honolulu": "Hawaii",
"America/Juneau": "Alaska",
"America/Dawson": "Pacific Time (US and Canada); Tijuana",
"America/Boise": "Mountain Time (US and Canada)",
"America/Chihuahua": "Chihuahua, La Paz, Mazatlan",
"America/Phoenix": "Arizona",
"America/Chicago": "Central Time (US and Canada)",
"America/Regina": "Saskatchewan",
"America/Mexico_City": "Guadalajara, Mexico City, Monterrey",
"America/Belize": "Central America",
"America/Detroit": "Eastern Time (US and Canada)",
"America/Indiana/Indianapolis": "Indiana (East)",
"America/Bogota": "Bogota, Lima, Quito",
"America/Glace_Bay": "Atlantic Time (Canada)",
"America/Caracas": "Caracas, La Paz",
"America/Santiago": "Santiago",
"America/St_Johns": "Newfoundland and Labrador",
"America/Sao_Paulo": "Brasilia",
"America/Argentina/Buenos_Aires": "Buenos Aires, Georgetown",
"America/Godthab": "Greenland",
"Etc/GMT+2": "Mid-Atlantic",
"Atlantic/Azores": "Azores",
"Atlantic/Cape_Verde": "Cape Verde Islands",
"Europe/London": "Dublin, Edinburgh, Lisbon, London",
"Africa/Casablanca": "Casablanca, Monrovia",
"Atlantic/Canary": "Canary Islands",
"Europe/Belgrade": "Belgrade, Bratislava, Budapest, Ljubljana, Prague",
"Europe/Sarajevo": "Sarajevo, Skopje, Warsaw, Zagreb",
"Europe/Brussels": "Brussels, Copenhagen, Madrid, Paris",
"Europe/Amsterdam": "Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna",
"Africa/Algiers": "West Central Africa",
"Europe/Bucharest": "Bucharest",
"Africa/Cairo": "Cairo",
"Europe/Helsinki": "Helsinki, Kiev, Riga, Sofia, Tallinn, Vilnius",
"Europe/Athens": "Athens, Istanbul, Minsk",
"Asia/Jerusalem": "Jerusalem",
"Africa/Harare": "Harare, Pretoria",
"Europe/Moscow": "Moscow, St. Petersburg, Volgograd",
"Asia/Kuwait": "Kuwait, Riyadh",
"Africa/Nairobi": "Nairobi",
"Asia/Baghdad": "Baghdad",
"Asia/Tehran": "Tehran",
"Asia/Dubai": "Abu Dhabi, Muscat",
"Asia/Baku": "Baku, Tbilisi, Yerevan",
"Asia/Kabul": "Kabul",
"Asia/Yekaterinburg": "Ekaterinburg",
"Asia/Karachi": "Islamabad, Karachi, Tashkent",
"Asia/Kolkata": "Chennai, Kolkata, Mumbai, New Delhi",
"Asia/Kathmandu": "Kathmandu",
"Asia/Dhaka": "Astana, Dhaka",
"Asia/Colombo": "Sri Jayawardenepura",
"Asia/Almaty": "Almaty, Novosibirsk",
"Asia/Rangoon": "Yangon Rangoon",
"Asia/Bangkok": "Bangkok, Hanoi, Jakarta",
"Asia/Krasnoyarsk": "Krasnoyarsk",
"Asia/Shanghai": "Beijing, Chongqing, Hong Kong SAR, Urumqi",
"Asia/Kuala_Lumpur": "Kuala Lumpur, Singapore",
"Asia/Taipei": "Taipei",
"Australia/Perth": "Perth",
"Asia/Irkutsk": "Irkutsk, Ulaanbaatar",
"Asia/Seoul": "Seoul",
"Asia/Tokyo": "Osaka, Sapporo, Tokyo",
"Asia/Yakutsk": "Yakutsk",
"Australia/Darwin": "Darwin",
"Australia/Adelaide": "Adelaide",
"Australia/Sydney": "Canberra, Melbourne, Sydney",
"Australia/Brisbane": "Brisbane",
"Australia/Hobart": "Hobart",
"Asia/Vladivostok": "Vladivostok",
"Pacific/Guam": "Guam, Port Moresby",
"Asia/Magadan": "Magadan, Solomon Islands, New Caledonia",
"Pacific/Fiji": "Fiji Islands, Kamchatka, Marshall Islands",
"Pacific/Auckland": "Auckland, Wellington",
"Pacific/Tongatapu": "Nuku'alofa"
}
const selectorOptions = moment.tz.names()
.filter(tz => {
return timezones.includes(tz)
})
.reduce((memo, tz) => {
memo.push({
name: tz,
offset: moment("2024-07-11").tz(tz).utcOffset()
});
return memo;
}, [])
.sort((a, b) => {
return a.offset - b.offset
})
.reduce((memo, tz) => {
const timezone = tz.offset ? moment("2024-07-11").tz(tz.name).format('Z') : '';
return memo.concat(`<option value="${tz.name}">(GMT${timezone}) ${_t(tz.name)}</option>`);
}, "");
document.querySelector(".js-Selector").innerHTML = selectorOptions;
/*
$(".js-Selector").on("change", e => {
const timestamp = dateTimeUtc.unix();
const offset = moment.tz(e.target.value).utcOffset() * 60;
const dateTimeLocal = moment.unix(timestamp + offset).utc();
document.querySelector(".js-TimeLocal").innerHTML = dateTimeLocal.format("ddd, DD MMM YYYY HH:mm:ss");
});
*/
document.querySelector(".js-Selector").value = "";
function formatTime(time) {
if(time == '00:00') {
return '00:00 (midnight)';
} else if(time == '12:00') {
return '12:00 (noon)';
} else {
if(time > '12:00') {
return time + " (" + (Number(time.substr(0, 2)) - 12) + ':' + (time.substr(3, 2) + 'PM') + ")";
} else {
return time;
}
}
}
function onChange() {
var startTimes0 = {'1': ['00:30', '09:00'],
'2': ['04:30', '13:00'],
'3': ['07:00', '15:30'],
'4': ['13:00', '21:30'],
'5': ['17:00', '01:30']}
var startTimes = {'1': ['04:30', '09:00'],
'2': ['04:30', '09:00'],
'3': ['11:00', '15:30'],
'4': ['17:00', '21:30'],
'5': ['17:00', '21:30']}
var startTimes2 = {'1': ['00:30', '03:30'],
'2': ['10:00', '13:00'],
'3': ['07:00', '10:00'],
'4': ['13:00', '16:00'],
'5': ['22:30', '01:30']}
var regions = {'1': 'Eastern Asia / Australia',
'2': 'Middle East / India',
'3': 'Europe / Africa',
'4': 'Eastern Americas',
'5': 'Western Americas'}
var deltas = []
for(var prop in startTimes0) {
var startTime0 = moment.tz("2024-07-13 " + startTimes0[prop][0], "UTC").clone().tz(document.getElementById('timezone').value).format().substr(11, 5);
var fracHour = Number(startTime0.substr(0, 2)) + Number(startTime0.substr(3, 2)) / 60.0;
deltas.push(Math.abs(fracHour - 8.6));
}
var bestDelta = deltas.indexOf(Math.min.apply(Math, deltas));
var theStr = "<p>";
var i = 0;
for(var prop in startTimes) {
var startTime = moment.tz("2024-07-13 " + startTimes[prop][0], "UTC").clone().tz(document.getElementById('timezone').value).format().substr(11, 5);
var endTime = moment.tz("2024-07-13 " + startTimes[prop][1], "UTC").clone().tz(document.getElementById('timezone').value).format().substr(11, 5);
var startTime2 = moment.tz("2024-07-13 " + startTimes2[prop][0], "UTC").clone().tz(document.getElementById('timezone').value).format().substr(11, 5);
var endTime2 = moment.tz("2024-07-13 " + startTimes2[prop][1], "UTC").clone().tz(document.getElementById('timezone').value).format().substr(11, 5);
var bold = false;
if( bestDelta == i) {
bold = true;
theStr += "<b>"
}
theStr += "<u>SLOT " + prop + " (daytime in " + regions[prop] + ") <br>"
if(bestDelta == i) {
wasBold = true;
theStr += "</b>"
}
else {
theStr += ""
}
if(prop.valueOf() === new String("1").valueOf() || prop.valueOf() === new String("3").valueOf() || prop.valueOf() === new String("4").valueOf()){
theStr += "</u> projects are " +
'<span style = "color:#e18256;font-family:monospace;font-size:12pt;">' + formatTime(startTime2) + " - " +
formatTime(endTime2)+'</span> local time;';
theStr += "<br> coursework is " +
'<span style = "color:#f0ba7d;font-family:monospace;font-size:12pt;">' + formatTime(startTime) + " - " +
formatTime(endTime)+'</span> local time;';
}
else {
theStr += "</u> coursework is " +
'<span style = "color:#f0ba7d;font-family:monospace;font-size:12pt;">' + formatTime(startTime) + " - " +
formatTime(endTime)+'</span> local time;';
theStr += "<br> projects are " +
'<span style = "color:#e18256;font-family:monospace;font-size:12pt;">' + formatTime(startTime2) + " - " +
formatTime(endTime2)+'</span> local time;';
}
theStr += "</p>"
i++;
}
document.getElementById('times').innerHTML = theStr;
}
onChange();
</script>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</div>
</div>
</div>
</body></html>