Sunrise and Sunset Data - 2014
by: Ivan R (over 10 years ago)



Project #190

1559 Views
Description

Data from timeanddate.com on sunrise and sunset times.

The times for sunrise and sunset are based on the ideal situation, where no hills or mountains obscure the view and the flat horizon is at the same altitude as the observer. Sunrise is the time when the upper part of the Sun is visible, and sunset is when the last part of the Sun is about to disappear below the horizon (in clear weather conditions).

If the horizon in the direction of sunrise or sunset is at a higher altitude than that of the observer, the sunrise will be later and sunset earlier than listed (and the reverse: on a high mountain with the horizon below the observer, the sunrise will be earlier and sunset later than listed).

The Earth's atmosphere refracts the incoming light in such a way that the Sun is visible longer than it would be without an atmosphere. The refraction depends on the atmospheric pressure and temperature. These calculations use the standard atmospheric pressure of 101.325 kilopascal and temperature of 15°C or 59°F. A higher atmospheric pressure or lower temperature than the standard means more refraction, and the sunrise will be earlier and sunset later. In most cases, however, this would affect the rising and setting times by less than a minute. Near the North and South Poles it could have greater impact because of low temperatures and the slow rate of the Sun's rising and setting.

Data Sets
774b6029514ae3654b2686dd1915940f
774b6029514ae3654b2686dd1915940f
774b6029514ae3654b2686dd1915940f
Fields
Name Units Type
Time
None
Timestamp
Sunrise
Time of Day
Number
Sunset
Time of Day
Number
Day Length
Hours
Number
Solar Noon
Time of Day
Number
Altitude
Degrees
Number
Distance
Million Miles
Number
Formula Fields
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Media

Sunrise and Sunset Data - 2014

Project #190 on iSENSEProject.org


Description

Data from timeanddate.com on sunrise and sunset times.

The times for sunrise and sunset are based on the ideal situation, where no hills or mountains obscure the view and the flat horizon is at the same altitude as the observer. Sunrise is the time when the upper part of the Sun is visible, and sunset is when the last part of the Sun is about to disappear below the horizon (in clear weather conditions).

If the horizon in the direction of sunrise or sunset is at a higher altitude than that of the observer, the sunrise will be later and sunset earlier than listed (and the reverse: on a high mountain with the horizon below the observer, the sunrise will be earlier and sunset later than listed).

The Earth's atmosphere refracts the incoming light in such a way that the Sun is visible longer than it would be without an atmosphere. The refraction depends on the atmospheric pressure and temperature. These calculations use the standard atmospheric pressure of 101.325 kilopascal and temperature of 15°C or 59°F. A higher atmospheric pressure or lower temperature than the standard means more refraction, and the sunrise will be earlier and sunset later. In most cases, however, this would affect the rising and setting times by less than a minute. Near the North and South Poles it could have greater impact because of low temperatures and the slow rate of the Sun's rising and setting.


Fields
Name Units Type of Data
Time
None
Timestamp
Sunrise
Time of Day
Number
Sunset
Time of Day
Number
Day Length
Hours
Number
Solar Noon
Time of Day
Number
Altitude
Degrees
Number
Distance
Million Miles
Number

Our Data
Name(s): ______________________________________
Date: _________________________________________

Time Sunrise Sunset Day Length Solar Noon Altitude Distance