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Time Zone Converter

Convert time between US time zones (ET, CT, MT, PT, AK, HI) and international global zones (UTC, GMT, CET, JST).

US Eastern (New York)

02:48:54 AM

Oct 20

US Central (Chicago)

01:48:54 AM

Oct 20

US Mountain (Denver)

12:48:54 AM

Oct 20

US Pacific (Los Angeles)

11:48:54 PM

Oct 19

UTC / GMT

06:48:54 AM

Oct 20

London (BST/GMT)

07:48:54 AM

Oct 20

Tokyo (JST)

03:48:54 PM

Oct 20

Sydney (AEST)

05:48:54 PM

Oct 20

How to Use the Time Zone Converter

Enter your parameters: Type, paste, or select your input values above.
View instant results: Calculations update in real time as you change values.
Copy or export: Click copy, download, or print to use your results immediately.

About this Tool

Easily convert times across all world time zones with automatic daylight saving time (DST) adjustments.

Gregorian Calendar & Business Day Calculation

Business Days = Total Calendar Days - Weekends (Sat/Sun) - US Federal Holidays

Calendar calculations compute exact day differentials while adjusting for leap years (divisible by 4, except century years unless divisible by 400) and standard US federal holiday shifts.

Worked Example: Project SLA Turnaround Example

Input:

Start Date: Monday, Oct 5 | End Date: Friday, Oct 30

Output:

20 Working Business Days (excluding 8 weekend days and Columbus Day)

Provides exact business turnaround dates for commercial contracts and legal SLAs.

Frequently Asked Questions

Which US federal holidays are excluded from business days?

Standard federal holidays include New Year Day, MLK Day, Washington Birthday, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas Day.

How do business days differ from calendar days in legal contracts?

Calendar days include every consecutive day from Sunday through Saturday. Business days exclude Saturdays, Sundays, and official statutory bank holidays.

How do leap years affect exact age calculations?

A solar year is approximately 365.2425 days. Leap years insert February 29 every 4 years, which our algorithm factors into exact year, month, and day age calculations.

Calculation Standards

Built in compliance with ISO 8601 international date representation and Title 5 US Code 6103 federal holiday schedules. For tax, legal, or medical advice, consult certified professionals.