Posix Time System Introduction -- Usage Examples Introduction Defines a non-adjusted time system with nano-second/micro-second resolution and stable calculation properties. The nano-second resolution option uses 96 bits of underlying storage for each ptime while the micro-second resolution uses 64 bits per ptime (see Build Options for details). This time system uses the Gregorian calendar to implement the date portion of the time representation. Usage Examples Example Description Time Math A few simple calculations using ptime and time_durations. Print Hours Retrieve time from clock, use a time_iterator. Local to UTC Conversion Demonstrates a couple different ways to convert a local to UTC time including daylight savings rules. Time Periods Some simple examples of intersection and display of time periods.