Time Zone Converter – Time Difference Calculator (2024)

FAQs

How to calculate time zone differences? ›

There are 12 negative time zones and 12 positive time zones. The opposite line of longitude to the Prime Meridian is the International Date Line, which is where the calendar changes by a day. Calculating time zones is simple and involves adding or subtracting an hour for every 15 degrees of longitude.

Specifically, the zones are spaced 15 degrees apart, and each time zone differs from its adjacent time zone by one hour (earlier or later). That way, the times in each zone align with the local solar times of sunrise and sunset.

For example, calculate the difference between 6:20 and 9:00. Step II: Subtract the minutes: 60 – 20 = 40 . Step III: Subtract the hours: 8 – 6 = 2 . So, the difference between the given time is 2 hours and 40 minutes.

They include hours, minutes and seconds. There are 60 seconds in one minute and 60 minutes in one hour. To convert from hours to minutes and minutes to seconds, you multiply by 60. To convert from seconds to minutes and minutes to hours, you divide by 60.

Yes, Pacific Standard Time (PST) is three hours behind Eastern Standard Time (EST). Each time zone in the US moving west from EST moves back by one hour; 4pm EST is 3pm CST, 2pm MST, and 1pm PST.

You can see that the most extreme time zones are +14 hours at Line Islands (Kiribati), and -12 hours in and around Baker Islands (US). Therefore, the maximum possible difference between times on Earth is 26 hours. That means that at 11:00 PM of a Monday in Baker Island, it is 1:00 AM of a Wednesday in Line Islands.

Time zones are another arbitrary societal choice, like the origin point of the Prime Meridian. They are based on longitude and defined by Earth's rotation, which completes a full circle (360 degrees) each day (24 hours). Each hour then, Earth rotates through 360/24 = 15° of longitude: the width of one time zone.

To calculate the duration of time, you can draw a line with the start time at one end and the end time at the other. If the start time is not directly on the hour, add up the minutes to the next greatest hour. Do the same with the end time but to the next smallest hour. Add up the hours in between.

How do you find time difference on a calculator? ›

The goal is to subtract the starting time from the ending time under the correct conditions. If the times are not already in 24-hour time, convert them to 24-hour time. AM hours are the same in both 12-hour and 24-hour time. For PM hours, add 12 to the number to convert it to 24-hour time.

time = distance ÷ speed.

To convert time to a number of hours, multiply the time by 24, which is the number of hours in a day. To convert time to minutes, multiply the time by 1440, which is the number of minutes in a day (24*60). To convert time to seconds, multiply the time time by 86400, which is the number of seconds in a day (24*60*60 ).

Conversion time is the product of conversion rate multiplied by conversion volume or sum of total transaction time divided by the total number of successful conversions during a specified time period.

Defined by UTC Offset

Every place on Earth is measured in terms of its distance east or west of the prime meridian (0°longitude) in Greenwich, London, United Kingdom. This is also the reference point for Coordinated Universal Time (UTC) with 1 hour per 15 degrees longitude.

Longitude is usually measured in degrees, minutes and seconds. Here's how longitude converts into your personal time zone: 15 degrees of longitude = 1-hour difference; 1-degree longitude = 4 minutes difference.

The earth spins through 360 degrees in 24 hours, meaning that in one hour the earth spins through (360÷24=)15 degrees. This means that, technically, as you travel around the earth, each 15 degrees of longitude difference in the location of places means that they should have a time difference of one hour.