Features of this Date & Time Tools Suite:

1. All 5 Date & Time Tools :

   • Time Zone Converter

   • Date Calculator

   • Age Calculator

   • Countdown Timer

   • Stopwatch

2. User-Friendly Interface :

   • Clean, modern card-based design

   • Intuitive tool organization

   • Clear input/output sections

   • Responsive layout for all devices

3. Functional Tools :

   • Real-time calculations for all tools

   • Visual feedback with color-coded results

   • Detailed output with explanations

   • Error handling for invalid inputs

4. Specialized Features :

   • Time zone converter with international time zones

   • Date calculator with difference and operation modes

   • Age calculator with exact year/month/day breakdown

   • Countdown timer with real-time updating

   • Stopwatch with lap recording functionality

5. Visual Feedback :

   • Color-coded success/error messages

   • Clear result displays with proper formatting

   • Real-time updating displays for timers

   • Lap time recording for stopwatch

6. Responsive Design :

   • Works on mobile, tablet, and desktop

   • Adapts to different screen sizes

   • Touch-friendly controls

Important Notes:

1. Client-Side Processing : All calculations happen in the browser with no server communication for privacy and speed.

2. Time Zone Handling : Uses the Intl.DateTimeFormat API for accurate time zone conversions.

3. Real-Time Updates : Countdown timer and stopwatch update in real-time using JavaScript intervals.

4. Date Validation : All tools include proper date validation and error handling.