đMultiple Time Zones Display
View current time across different time zones worldwide
Compare current times across major cities worldwide. Updates every second for real-time accuracy.
âąī¸Visual Countdown Timer
Set a countdown timer to track weeks from now with live updates
');
printWindow.document.close();setTimeout(function() {
printWindow.print();
}, 250);
}// ========================================
// MULTIPLE TIME ZONES DISPLAY FEATURE
// ========================================let worldClocksInterval = null;function toggleTimeZones() {
const toggle = document.getElementById('timezonesToggle');
const content = document.getElementById('timezonesContent');toggle.classList.toggle('active');
content.classList.toggle('show');if (content.classList.contains('show')) {
// Initialize world clocks
updateWorldClocks();
// Update every second
worldClocksInterval = setInterval(updateWorldClocks, 1000);
} else {
// Stop updating when hidden
if (worldClocksInterval) {
clearInterval(worldClocksInterval);
worldClocksInterval = null;
}
}
}function updateWorldClocks() {
const worldClocksContainer = document.getElementById('worldClocks');
if (!worldClocksContainer) return;const timeZones = [
{ city: 'New York', timezone: 'America/New_York', emoji: 'đŊ' },
{ city: 'Los Angeles', timezone: 'America/Los_Angeles', emoji: 'đ´' },
{ city: 'London', timezone: 'Europe/London', emoji: 'đŦđ§' },
{ city: 'Paris', timezone: 'Europe/Paris', emoji: 'đŧ' },
{ city: 'Tokyo', timezone: 'Asia/Tokyo', emoji: 'đž' },
{ city: 'Sydney', timezone: 'Australia/Sydney', emoji: 'đĻ' },
{ city: 'Dubai', timezone: 'Asia/Dubai', emoji: 'đ' },
{ city: 'Singapore', timezone: 'Asia/Singapore', emoji: 'đĻ' },
{ city: 'Hong Kong', timezone: 'Asia/Hong_Kong', emoji: 'đī¸' },
{ city: 'Berlin', timezone: 'Europe/Berlin', emoji: 'đŠđĒ' },
{ city: 'Mumbai', timezone: 'Asia/Kolkata', emoji: 'đŽđŗ' },
{ city: 'SÃŖo Paulo', timezone: 'America/Sao_Paulo', emoji: 'đ§đˇ' }
];const now = new Date();
let html = '';timeZones.forEach(tz => {
try {
const timeOptions = {
timeZone: tz.timezone,
hour: '2-digit',
minute: '2-digit',
second: '2-digit',
hour12: true
};const dateOptions = {
timeZone: tz.timezone,
weekday: 'short',
month: 'short',
day: 'numeric'
};const timeString = now.toLocaleTimeString('en-US', timeOptions);
const dateString = now.toLocaleDateString('en-US', dateOptions);// Get UTC offset
const offsetFormatter = new Intl.DateTimeFormat('en-US', {
timeZone: tz.timezone,
timeZoneName: 'short'
});
const parts = offsetFormatter.formatToParts(now);
const timeZoneName = parts.find(part => part.type === 'timeZoneName')?.value || '';html += `
${tz.emoji} ${tz.city}
${timeZoneName}
${timeString}
${dateString}
`;
} catch (e) {
console.error(`Error formatting time for ${tz.city}:`, e);
}
});worldClocksContainer.innerHTML = html;
}// ========================================
// VISUAL COUNTDOWN TIMER FEATURE
// ========================================let countdownInterval = null;
let countdownTargetTime = null;
let countdownTotalSeconds = 0;function toggleCountdown() {
const toggle = document.getElementById('countdownToggle');
const content = document.getElementById('countdownContent');toggle.classList.toggle('active');
content.classList.toggle('show');if (!content.classList.contains('show')) {
// Stop countdown when hidden
stopCountdown();
}
}function startCountdown() {
const weeksInput = document.getElementById('countdownWeeksInput');
const weeks = parseInt(weeksInput.value);if (!weeks || weeks < 1 || weeks > 520) {
alert('Please enter a valid number of weeks (1-520)');
return;
}// Stop any existing countdown
stopCountdown();// Calculate target time
const now = new Date();
countdownTargetTime = new Date(now);
countdownTargetTime.setDate(countdownTargetTime.getDate() + (weeks * 7));
countdownTotalSeconds = weeks * 7 * 24 * 3600; // Approximate seconds in weeks// Show countdown display
const display = document.getElementById('countdownDisplay');
display.classList.add('show');// Update immediately and then every second
updateCountdown();
countdownInterval = setInterval(updateCountdown, 1000);// Scroll to countdown display
display.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}function stopCountdown() {
if (countdownInterval) {
clearInterval(countdownInterval);
countdownInterval = null;
}
countdownTargetTime = null;
}function updateCountdown() {
if (!countdownTargetTime) return;const now = new Date();
const diff = countdownTargetTime.getTime() - now.getTime();// Check if countdown finished
if (diff <= 0) {
stopCountdown();
showCountdownComplete();
return;
}// Calculate time units
const totalSeconds = Math.floor(diff / 1000);
const days = Math.floor(totalSeconds / (24 * 3600));
const hours = Math.floor((totalSeconds % (24 * 3600)) / 3600);
const minutes = Math.floor((totalSeconds % 3600) / 60);
const seconds = totalSeconds % 60;// Calculate progress percentage
const elapsed = countdownTotalSeconds - totalSeconds;
const progressPercent = (elapsed / countdownTotalSeconds) * 100;// Update title
document.getElementById('countdownTitle').textContent =
`â° Countdown to ${countdownTargetTime.toLocaleString('en-US', {
weekday: 'short',
month: 'short',
day: 'numeric',
year: 'numeric'
})}`;// Update progress bar
document.getElementById('countdownProgress').style.width = progressPercent + '%';// Update countdown timer
document.getElementById('countdownTimer').innerHTML = `
${String(hours).padStart(2, '0')}Hours
${String(minutes).padStart(2, '0')}Minutes
${String(seconds).padStart(2, '0')}Seconds
`;// Update info text
const totalHours = Math.floor(totalSeconds / 3600);
const totalMinutes = Math.floor(totalSeconds / 60);document.getElementById('countdownInfo').innerHTML = `
${totalHours} hours,
${totalMinutes} minutes,
or
${totalSeconds.toLocaleString()} seconds remaining until your target time.
Target: ${countdownTargetTime.toLocaleString('en-US', {
weekday: 'long',
year: 'numeric',
month: 'long',
day: 'numeric',
hour: '2-digit',
minute: '2-digit'
})}
`;
}function showCountdownComplete() {
document.getElementById('countdownTitle').textContent = 'đ Countdown Complete!';
document.getElementById('countdownProgress').style.width = '100%';
document.getElementById('countdownTimer').innerHTML = `
`;
document.getElementById('countdownInfo').innerHTML = `
đ Your countdown has reached zero!
The target time of
${countdownTargetTime.toLocaleString('en-US', {
weekday: 'long',
year: 'numeric',
month: 'long',
day: 'numeric',
hour: '2-digit',
minute: '2-digit'
})} has been reached.
`;// Play a notification sound (if browser allows)
try {
const audio = new Audio('data:audio/wav;base64,UklGRnoGAABXQVZFZm10IBAAAAABAAEAQB8AAEAfAAABAAgAZGF0YQoGAACBhYqFbF1fdJivrJBhNjVgodDbq2EcBj+a2/LDciUFLwgZaLvt559NEAxQp+PwtmMcBjiR1/LMeSwFJHfH8N2QQAoUXrTp66hVFApGn+DyvmwhBz6M0fPTgjMGHm7A7+OZURE');
audio.play().catch(() => {});
} catch (e) {}
}// Clean up intervals on page unload
window.addEventListener('beforeunload', function() {
if (worldClocksInterval) clearInterval(worldClocksInterval);
if (countdownInterval) clearInterval(countdownInterval);
});
Weeks Calculator Table
If you’re just interested in one specific number of weeks from now – , this table automatically updates and
provides the answer that you need from 1 week to 24 weeks from now. đ
Dates are shown in your selected format and time zone.
đ Table Information
This table automatically updates every minute to show you exactly what date it will be for the next 24 weeks.
The calculations account for month transitions and year boundaries. All dates are displayed in
your selected time zone and format preference. Use this table for quick reference when you need to know
future dates without manual calculations.
Week-Based Time Calculations
Weeks are a fundamental unit of time measurement used in calendars, business planning, and personal scheduling.
Understanding how weeks relate to other time units is essential for accurate date calculations and project planning.
Week Conversion Reference
1 week = 7 days
1 week = 168 hours
1 week = 10,080 minutes
1 week = 604,800 seconds
When calculating dates by adding or subtracting weeks, the calculator automatically accounts for all calendar
complexities including month transitions, year boundaries, and varying month lengths. This ensures that
calculations like “4 weeks from today” or “8 weeks before a deadline” are always accurate.
Time Zone Considerations
Time zones play a crucial role in week-based calculations, especially for international projects and global scheduling.
Our calculator allows you to specify time zones to ensure that all participants receive consistent and accurate
scheduling information regardless of their geographical location.
For instance, when planning international meetings or coordinating across time zones, selecting the appropriate
time zone ensures that week calculations remain accurate and meaningful for all involved parties. This is
particularly important for multinational businesses and global collaborations.
Enhance your time calculations with our comprehensive collection of time-related calculators:
âšī¸ Scientific Accuracy Note
This Weeks Calculator uses the Gregorian calendar system and follows international standards for week-based date calculations.
All calculations account for month transitions, year boundaries, and varying month lengths. The tool provides results
accurate to the day and is designed for planning, scheduling, and project management purposes. For historical calculations
spanning calendar reforms, additional historical context may be required.
