Devices, systems, and methods for presenting date and time information are described. In some embodiments, a date and/or a time value is presented as a base-36 number. In some embodiments, an integral portion of the base-36 number represents a date value, and a fractional portion of the base-36 number represents a time value. Each base-36 digit may be represented by one of the numerals 0-9 and the letters A-Z. Both digital and analog clocks and a clock application displaying date and/or time information in which a day is broken into thirty-six increments are disclosed. A clock application displaying coordinates of a location based on a base-36 geo-positioning system is disclosed.