Apps by 
World Clock App for iOS
Advanced functionality. Easy to use.
Home Apps
Apps by timeanddate.com
Apps for iOS
Time & Date Calculator App for iOS
See how long remains before a deadline or exactly when those 30 days are up.
Meeting Planner App for iOS
Find the best time for a web meeting across time zones.
Countdown App for iOS
Count down to the New Year, birthdays, weddings, or your retirement
World Clock and Time Zones App
Time & time zones around the world.
API & XML Services
Developing an Application? Integrate our data with your app. Try our API Services for free for 3 months... read more
Time Zones API
Time Zone info, Sunrise & Sunset, Daylight Saving Time, Longitude, Latitude, and more.
Holidays API
Public holidays, observances, religious days, seasons, Daylight Saving Time events, and more.
Astronomy API
Rise & set times for the Sun and the Moon, twilight start & end, day length, moon phases, and more
Calculator Services
Calculate the number of business days between two dates or days using a variety of country and holiday criteria.