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Generally accurate to within a few minutes. (They do not take account of Daylight Saving Time.)
However, you need to apply some corrections to get to "clock time".
Clock time uses "mean solar time". That's an average of the "apparent solar time" (as shown by sundials) during the year.
You need to apply the "equation of time", for the day of the year, to get from "sundial time" to "mean solar time".
Then you need to make a correction for your longitude, within your particular time zone.
What else can I help you with?
What were sources of measuring time in past?
Some sources for of measuring time in the past were sundials, and hourglasses
What were the time measuring devises used in ancient times?
sundials
What is the purpose of the sundials device?
The sundial device was and is a very accurate tool of measuring units of time. The sundial devices uses the sun to pinpoint exactly what time it is because of where the shadow falls.
Are there different types of sundials?
Sundials use the posidtion of the sun to cast a shadow on the dial. You can then read the number on where the shadow falls to get the time. As a result, no, there shouldn't be different types of sundials.
Are sundials accurate?
no because its not like a clock in our days.
Why do sundials need to be adjusted?
we have to adjust sundials to see the shadow and time
Why were sundials used?
Sundials were used to tell time, back without watches.
What is a clypsedra?
A clypsedra is an ancient time-measuring device used by the ancient Greeks. It consisted of a basin in which water flowed out at a constant rate, allowing for accurate time tracking. It was typically used in conjunction with sundials to measure time intervals.
How does measuring shadows help us determine what time of day it is?
Measuring shadows is useful for determining time of day because the length and direction of a shadow change based on the position of the sun in the sky. By measuring the length and direction of a shadow cast by an object, we can estimate the angle of the sun and roughly determine the time of day. This method is commonly used with tools like sundials.
Are sundials used today?
Sundials are not commonly used today for timekeeping purposes because they are not as accurate as modern timekeeping devices like watches and smartphones. However, sundials are still sometimes used for decorative or educational purposes.
When the Romans used sundials how could they tell the exact time on rainy days or with no sun?
They couldn't tell the time from sundials because there was no sun.
How did the aincient egyptians measure time?
Sundials
