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How to Use the Day and Night World Map App

Icon for Day and Night app

Follow this user's guide for the Day and Night World Map iPhone app to find out the current position of the sun and the moon. It features a scrollable map that shows which parts of the world are in the daylight and which are at night.

The upgraded version offers a number of additional features, including information about when there's a solar eclipse and where they're visible, as well as animated world maps in 5 different looks.


How Do I Get the App?

Download the timeanddate.com’s Day and Night World Map from the App Store or in iTunes.

App Store Logo

To download the app, simply tap the price button in the upper right-hand corner and navigate through the “Buy Now” options. When the download is complete, the Day and Night World Map application will appear on your home screen and is ready for you to use at any time.

The Day and Night World Map is also available in high definition on iPad.

Using the Day and Night World Map on iPhone

Screenshot of Day and Night App

Figure 1: The Day and Night World Map.

Press the Home button at any time to go to the Home screen.
Tap on timeanddate.com’s Day and Night World Map application.

Optional Upgrade Features

Perform an In-App purchase to get more options for the Day and Night World Map. These features include:

To purchase the upgrade:

How to Use the Upgraded Day and Night World Map

Screenshot of Day and Night App

Figure 2: Fast forward or rewind time with the Upgraded Day and Night World Map.

The upgraded Day and Night World Map now has play buttons located in the bottom left corner. These play buttons allow you to view an animated map where you can fast forward or rewind time at different speed intervals (See Figure 2).

Map animation

Selecting eclipses

Eclipses: what does the map show?

The animated world map shows where the selceted solar eclipse is visible (light gray, dark gray and red shading) as well as day and night (dark “wave” slowly moving across the Earth's surface).

The colors within the shaded area show how much of the Sun's disk the Moon covers during the eclipse. The dark center of the red area shows the best locations to view this eclipse. Here, the Moon moves centrally in front of the Sun.

In the red area, the Sun is obscured 90 percent or more, in the dark gray area the Moon covers between 25 and 90 percent of the Sun's disk. The light gray area symbolizes locations where less than 25 percent are covered.

Selecting map design

Additional options

Screenshot of Day and Night App

Figure 3: More options and Help feature.

Tap the “i” icon located in the bottom right hand corner to view more options and the In-App Help feature (See Figure 3).

Support

Fill out our online support form if you have any questions, comments, or concerns regarding the Day and Night World Map app for iPhone.

You can also email any questions, bug reports, or suggestions to webmaster@timeanddate.com . Please mention “Day and Night” in the subject line and give a detailed description of the problem so that we can improve the quality and performance of our apps.

Credits

The help system is based on the iUI User Interface framework which is Copyright © 2007 - 2009, iUI Project Members. All rights reserved.

The Day and Night Map is generated based on images from the NASA Visible Earth Project.

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