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How long is 90 minutes? This can be a difficult question to answer, as everyone’s definition of how long something lasts will be different depending on what they’re doing while they measure it. For example, if you’re spending time with friends and family, an hour might seem like just a second; if you’re stuck in traffic with nothing but bad radio and bad drivers around you, though, an hour can feel like forever.
1) How long is 90 minutes?
It seems like a simple question, but there’s actually some debate about how long an hour really is. Officially, one hour is 60 minutes. But if you ask Google or Wolfram Alpha, they’ll tell you that it’s 86,400 seconds—and that includes fractions of a second! In other words, an hour isn’t just one unit; it can be broken up into many different parts. For example, 10 hours could mean 4 hours and 40 minutes (if we use Google), 3 hours and 20 minutes (if we use Wolfram Alpha), or 1 hour and 40 minutes (if we go by time zones). Confusing? Maybe so. But whether you measure an hour in thousands of seconds or dozens of fractions, it’s still 90 whole minutes! Or is it…?
2) The History of Timekeeping
Before clocks were even invented, people kept time by observing sunrises and sunsets. These signs helped them determine roughly how long a day was. But people soon discovered that there is more than one way to tell time—it wasn’t long before clocks with hourglasses began to appear in homes and businesses. The first hourglasses were made of stone or glass and required constant supervision because they could be overturned accidentally; sand would spill out, changing your sense of how much time had passed.
3) What is a Second, Minute, and Hour Anyway?
The normal definition of a second is 9,192,631,770 cycles of a cesium atom. Of course, you don’t care much about that when your hourglass runs out and you need to re-set it to 60 minutes so that you know how long 90 minutes are.
4) Time Zones Explained
Time zones are based on lines of longitude and play a big role in understanding how long 90 minutes is. As you move east or west, you change time zones, which means that in every single hour (give or take), your day shifts by at least one hour. In other words, if it’s 1:00 pm local time where you live but it’s 2:00 pm where someone else lives, they’re living in a different time zone altogether. Depending on whether you observe Daylight Saving Time (DST) or not, within a time zone, there may be sub-zones that differ by an additional hour. What makes this particularly confusing is that half of our states don’t follow DST while others do; until 1986 Hawaii didn’t observe DST either but changed their state laws to adhere to both standards! All told, there are 40 unique time zones in North America alone.
5) More Questions About Time Zones
How Long is 90 Minutes in Other Time Zones?. 60 minutes is typically one-sixth of a 24-hour day, but it depends on which time zone you’re observing. The same amount of time can be longer or shorter depending on where you are . . . If you live in San Francisco and travel to New York City for business, for example, you will be five hours ahead of California’s Pacific Time Zone and six hours behind San Francisco when there’s a time change.
6) How Do Scientists Keep Track of Standard Time?
Today, international standard time is called Coordinated Universal Time (UTC). UTC can trace its roots back to Greenwich Mean Time (GMT), which was established in 1884 by an international conference in Washington D.C. After their meeting, delegates from 25 nations voted unanimously to adopt Greenwich Mean Time as a worldwide standard for measuring time on Earth.
7) Conclusion – Understanding Why We Measure Time
Hours, minutes, and seconds are measurements of time. The most basic unit is a second which can be broken down into even smaller units: milliseconds. The official definition of a second is as follows: It is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of cesium-133 atoms in their ground state at temperature 273 K (0 °C or 32 °F). What does that mean?
