- Does every 12 hours mean twice a day?
- How many seconds is 23 hours 56 minutes and 4 seconds?
- How long is 24hrs?
- Is 9am to 9am 24 hours?
- How many minutes does a year have?
- Which country has 24 hours daylight?
- What planet has longest day?
- Why is a day 23 hours and 56 minutes?
- Is a day exactly 24 hours?
- How many hours is a full day?
- What is Earth’s length of year?
- How long is a night?
- Is a day 12 or 24 hours?
- How many days is 99 hours 99 minutes 99 seconds?
- How is 24 hours calculated?
- Why is there 60 minutes in an hour and not 100?
- Are there 23 hours and 56 minutes in a day?
- How long is 48hrs?
- Which planet has the longest year?

## Does every 12 hours mean twice a day?

When medicines are to be given more than once daily, it is important that they are spaced out regularly.

For example, a twice-daily dose should be roughly given every 12 hours or morning and night..

## How many seconds is 23 hours 56 minutes and 4 seconds?

86164 secondsHow long is a “mean solar day”? Let’s do the math: One sidereal day is 23 hours, 56 minutes, 4 seconds, or 86164 seconds. Multiply this by 366.25 sidereal days in a year, and you get 31557565 seconds.

## How long is 24hrs?

24 hours equals 1 days.

## Is 9am to 9am 24 hours?

24-Hour Time Formatam/pm24-hour7am07:008am08:009am09:0010am10:0022 more rows

## How many minutes does a year have?

An average Gregorian year is 365.2425 days (52.1775 weeks, 8765.82 hours, 525949.2 minutes or 31556952 seconds). For this calendar, a common year is 365 days (8760 hours, 525600 minutes or 31536000 seconds), and a leap year is 366 days (8784 hours, 527040 minutes or 31622400 seconds).

## Which country has 24 hours daylight?

SwedenAbisko, Sweden Abisko is home to the Aurora Sky Station and epicenter for aurora experiences in northern Sweden. During summer months, the sun bathes the town in up to 24 hours of sunlight per day.

## What planet has longest day?

VenusVenus has the longest period of rotation which means that Venus has the longest day time among all other planets in the solar system. A planet’s “day” is the same as its “period of rotation”. Mercury is the planet with the shortest period of revolution of approximately 88Earth days.

## Why is a day 23 hours and 56 minutes?

The time it takes for the earth to rotate completely around its axis is 23 hours and 56 minutes and 4 seconds. But the earth is also orbiting the Sun, and so by the time the earth has completed one full spin on its own axis, the point nearest the sun has changed slightly.

## Is a day exactly 24 hours?

Modern timekeeping defines a day as the sum of 24 hours – but that is not quite correct. The Earth’s rotation slows down over time. So in terms of solar time, most days are a little longer than 24 hours.

## How many hours is a full day?

23 hoursAnother way to measure a day is to count the amount of time it takes for a planet to completely spin around and make one full rotation. This is called a sidereal day. On Earth, a sidereal day is almost exactly 23 hours and 56 minutes.

## What is Earth’s length of year?

365 daysEarth/Orbital period

## How long is a night?

12 hoursOne day usually takes one day, and – analogous – one night takes one night. In hours, the average is 12 hours for the day and 12 hours for the night. Explaining… The Sun defines our “day” and “night” period.

## Is a day 12 or 24 hours?

Our 24-hour day comes from the ancient Egyptians who divided day-time into 10 hours they measured with devices such as shadow clocks, and added a twilight hour at the beginning and another one at the end of the day-time, says Lomb. “Night-time was divided in 12 hours, based on the observations of stars.

## How many days is 99 hours 99 minutes 99 seconds?

4.13 days99 hours equals 4.13 days.

## How is 24 hours calculated?

10:00 p.m. 11:00 p.m. The 24-hour clock is a way of telling the time in which the day runs from midnight to midnight and is divided into 24 hours, numbered from 0 to 24. … A time in the 24-hour clock is written in the form hours:minutes (for example, 01:23), or hours:minutes:seconds (01:23:45).

## Why is there 60 minutes in an hour and not 100?

THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.

## Are there 23 hours and 56 minutes in a day?

In other words, a solar day is how long it takes Earth to rotate once – and then some. A sidereal day – 23 hours 56 minutes and 4.1 seconds – is the amount of time needed to complete one rotation. In this system, the stars always appear at the same place in the sky at the same time each sidereal day.

## How long is 48hrs?

48 hours equals 2 days.

## Which planet has the longest year?

NeptuneGiven its distance from the Sun, Neptune has the longest orbital period of any planet in the Solar System. As such, a year on Neptune is the longest of any planet, lasting the equivalent of 164.8 years (or 60,182 Earth days).