WLC Biblical Calendar, developed by Worlds Last Chance, is a free Android application that provides a unique correlation between the solar Gregorian calendar and the lunar-solar Biblical calendar. This one-of-a-kind program is not available anywhere else in the world and offers a Lunar Sabbath Application to help you honor your Maker by keeping His annual feasts and weekly Sabbaths holy.

The app offers a Lunar-Solar Biblical calendar with corresponding Gregorian dates and a Gregorian calendar with corresponding Lunar-Solar Biblical calendar dates. It allows you to calculate either the Lunar-Solar calendar or the Gregorian calendar into the future or the past with the Creator's Sabbaths and Feast Days marked on both calendars. Additionally, it provides the percentage of the moon's illumination as well as times for sunrise, sunset, moonrise, and moonset.

The app also provides accurate astronomical information for both the sun and the moon for your specific location, making it an invaluable tool for those who wish to honor their Maker by keeping His annual feasts and weekly Sabbaths holy. However, it is important to note that while the app has taken every precaution to ensure the greatest possible accuracy, it is only intended to be a guide and should not be used as a substitute for prayerful study and careful observation.