What Time Will It Be in 12 Hours

The concept of time is something that permeates every aspect of our lives. We rely on time to structure our day, make plans, and synchronize with others. So, when you ask, “What time will it be in 12 hours?” you’re essentially inquiring about how time is measured and how we can calculate future moments in a consistent and meaningful way. In this article, we’ll delve into the intricacies of time, time zones, and how to calculate what time it will be 12 hours from now.

Understanding Time

Time is a fundamental dimension of our existence. It allows us to organize our lives, plan for the future, and record the past. Time, as we commonly understand it, is divided into hours, minutes, and seconds. This system of measuring time is known as the Gregorian calendar, which is based on the Earth’s rotation and orbit around the Sun.

The Earth takes approximately 24 hours to complete one full rotation on its axis. As a result, we have 24 hours in a day. Each hour is divided into 60 minutes, and each minute into 60 seconds. This division allows us to precisely measure and communicate the passage of time.

Time Zones

As you move east or west across the Earth, the local time changes. This is because the Earth is divided into time zones, with each time zone typically spanning 15 degrees of longitude. The reason for time zones is to synchronize time across the globe in a way that’s practical and meaningful for human activities.

In total, there are 24 time zones, each one hour ahead or behind the adjacent time zone. The Prime Meridian (0 degrees longitude) in Greenwich, England, is often used as the reference point for time zones. It’s known as Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC).

Calculating Time in 12 Hours

To calculate what time it will be in 12 hours, you need to consider the current time and your local time zone. Let’s say, for example, that it is currently 2:00 PM in your local time zone. To determine what time it will be 12 hours from now, you simply add 12 hours to the current time.

2:00 PM + 12 hours = 2:00 AM

So, if it’s 2:00 PM right now, it will be 2:00 AM in 12 hours.

However, it’s important to remember that this calculation assumes that you’re not crossing over into a different day. If it’s already late in the evening, adding 12 hours might result in the next day. For instance, if it’s 10:00 PM, adding 12 hours would give you 10:00 AM on the following day.

Adjusting for Time Zones

Calculating time 12 hours from now becomes a bit more complex when you’re dealing with different time zones. To do this, you need to account for the time difference between your local time zone and the desired time zone.

Let’s say you’re in New York (Eastern Time, UTC-5) and you want to know what time it will be in Tokyo (Japan Standard Time, UTC+9) 12 hours from now. You start with your local time and then add 12 hours, considering the time difference.

2:00 PM (New York time) + 12 hours = 2:00 AM (New York time, next day)

Now, you need to account for the time difference between New York and Tokyo, which is 14 hours (9 hours ahead of New York).

2:00 AM (New York time, next day) + 14 hours = 4:00 PM (Tokyo time, same day)

So, if it’s 2:00 PM in New York, it will be 4:00 PM in Tokyo 12 hours from now.

Daylight Saving Time

Daylight Saving Time (DST) can complicate time calculations, as it involves changing the local time by one hour during certain periods of the year. Some regions observe DST, while others do not. When calculating time in 12 hours, it’s important to consider whether DST is in effect and how it affects the local time.

For example, if you’re in a location that observes DST, you should account for the time change when calculating the future time. Make sure to check whether the current date falls within the DST period and adjust your calculation accordingly.


Time is a critical aspect of our daily lives, and understanding how to calculate future times is a useful skill. To determine what time it will be in 12 hours, start with the current time and add 12 hours, making sure to account for any time zone differences and the observance of Daylight Saving Time if applicable. With this knowledge, you can better plan your activities and coordinate with others across different regions and time zones.