Meeting Time Finder

About Meeting Time Finder

This meeting time finder converts a base time across multiple time zones, displaying local times for each location. It's designed for distributed teams scheduling cross-timezone meetings, webinars, conference calls, and international events.

How Time Zone Conversion Works

Time conversion uses UTC (Coordinated Universal Time) as the reference point:

Time Zone Conversion Formula:

localTime = utcTime + (offset × 60 minutes)

Example: Convert 15:00 UTC to various zones

UTC+0  London:    15:00 + (0 × 60)     = 15:00 (3:00 PM)
UTC+1  Paris:     15:00 + (1 × 60)     = 16:00 (4:00 PM)
UTC+5:30 Mumbai:  15:00 + (330 min)    = 20:30 (8:30 PM)
UTC+8  Singapore: 15:00 + (8 × 60)     = 23:00 (11:00 PM)
UTC-5  New York:  15:00 + (-5 × 60)    = 10:00 (10:00 AM)
UTC-8  Los Angeles: 15:00 + (-8 × 60)  = 07:00 (7:00 AM)

JavaScript Implementation:
function convertUTC(utcDate, offsetHours) {
  const utc = utcDate.getTime() + (utcDate.getTimezoneOffset() * 60000);
  const local = new Date(utc + (offsetHours * 3600000));
  return local;
}

Common UTC Offsets Reference

Optimal Meeting Time Windows

Best overlapping hours for common region combinations (in local times):

Time Zone Conversion Algorithm

JavaScript Time Zone Conversion:

function parseOffset(offsetStr) {
  // Handle formats: +8, -5, +5:30, -3:30
  const match = offsetStr.match(/^([+-])(\d+)(?::(\d+))?$/);
  if (!match) return null;

  const sign = match[1] === '+' ? 1 : -1;
  const hours = parseInt(match[2], 10);
  const minutes = match[3] ? parseInt(match[3], 10) : 0;

  return sign * (hours + minutes / 60);
}

function convertToZone(utcDate, offsetStr, label) {
  const offset = parseOffset(offsetStr);
  if (offset === null) return null;

  // Get UTC timestamp in milliseconds
  const utc = utcDate.getTime() + (utcDate.getTimezoneOffset() * 60000);

  // Apply offset (convert hours to milliseconds)
  const local = new Date(utc + (offset * 3600000));

  // Format as readable string
  const timeStr = local.toLocaleTimeString('en-US', {
    hour: '2-digit',
    minute: '2-digit',
    hour12: true
  });

  const dateStr = local.toLocaleDateString('en-US', {
    weekday: 'short',
    month: 'short',
    day: 'numeric'
  });

  return {
    label: label,
    offset: offsetStr,
    time: timeStr,
    date: dateStr,
    iso: local.toISOString().slice(0, 16).replace('T', ' ')
  };
}

// Usage:
const baseTime = new Date('2024-03-15T14:00:00'); // 2 PM UTC
const result = convertToZone(baseTime, '-5', 'New York');
console.log(result);
// { label: "New York", offset: "-5", time: "09:00 AM", date: "Mar 15" }

Daylight Saving Time (DST) Reference

DST shifts clocks forward 1 hour during summer months. Not all regions observe DST:

Common Use Cases

• Global Team Standups: Find rotating times fair to all team members across continents
• Webinar Scheduling: Pick times that maximize attendance across target regions
• Client Calls: Schedule calls with international clients in their business hours
• Conference Planning: Set keynote times accessible to global virtual attendees
• Remote Work Coordination: Align async work windows for handoffs between time zones
• Customer Support: Plan 24/7 coverage across regional support centers
• Live Streaming: Schedule broadcasts for peak viewing in multiple regions

Time Zone Abbreviations Reference

Scheduling Best Practices

• Avoid early morning calls: Before 8 AM local time reduces engagement
• Respect lunch hours: 12-2 PM local is often unavailable
• Consider Friday afternoons: Many cultures end work early or avoid meetings
• Rotate inconvenient times: Share burden when no perfect time exists
• Send calendar invites with timezone: Use IANA timezone IDs (America/New_York) not just offsets
• Record meetings: Allow async participation for those who can't attend live
• Check DST transitions: Verify times during spring/fall transition weeks