Time and Date is a company based in Norway that offers time zones, calendars, weather, the world clock and astronomy information. This service provides free clocks, free countdowns and APIs at no cost. One of the applications featured in the site is the Astronomy API that is valuable to establish times for sun and moon, day length and moon phases. This API about astronomy could be useful for developers who work with JSON and XML formats because examples in both languages can be found on the site. Besides the samples, developers can find responses of locations and recognized parameters. Packages with additional requests available for purchase.