日出日没計算 is a utility application for iPhone that allows users to calculate the sunrise and sunset times for a specified location. It also provides the option to calculate the sunrise and sunset times for a specific date, as well as draw a sun path diagram on a map.

This app is particularly useful for landscape photographers who want to determine the best times for capturing photos based on sunrise, sunset, and the golden hour. It also allows users to explore the direction of the sunrise and sunset on a detailed map.

There are three methods for setting the location:

• Map Search: Users can search for a location on the map and calculate the sunrise and sunset times, as well as draw the sun path diagram.
• Current Location: Users can calculate the sunrise and sunset times for their current location and draw the sun path diagram centered on their location.
• Favorites Selection: Users can save locations as favorites and select them to calculate the sunrise and sunset times and draw the sun path diagram.

Please note that a network connection (Wi-Fi or mobile data) is required to display the map. The app displays the time based on the location set on the device, regardless of whether the selected location is domestic or international. For example, if the device is set to "Tokyo" in the "Date & Time" settings on an iPhone, the time will be displayed in Japan Standard Time (JST).