Flight Time Example
This example shows a program that calculates the arrival time of a plane that flys from Phoenix to New York. During the flight New York shifts into daylight savings time (Phoenix doesn't because Arizona doesn't use dst).
#include "boost/date_time/local_time/local_time.hpp"
#include <iostream>
/* This example shows a program that calculates the arrival time of a plane
* that flys from Phoenix to New York. During the flight New York shifts
* into daylight savings time (Phoenix doesn't because Arizona doesn't use
* dst).
*
*
*/
int main()
{
using namespace boost::gregorian;
using namespace boost::local_time;
using namespace boost::posix_time;
//setup some timezones for creating and adjusting local times
//This user editable file can be found in libs/date_time/data.
tz_database tz_db;
tz_db.load_from_file("date_time_zonespec.csv");
time_zone_ptr nyc_tz = tz_db.time_zone_from_region("America/New_York");
//Use a
time_zone_ptr phx_tz(new posix_time_zone("MST-07:00:00"));
//local departure time in phoenix is 11 pm on april 2 2005
// (ny changes to dst on apr 3 at 2 am)
local_date_time phx_departure(date(2005, Apr, 2), hours(23),
phx_tz,
local_date_time::NOT_DATE_TIME_ON_ERROR);
time_duration flight_length = hours(4) + minutes(30);
local_date_time phx_arrival = phx_departure + flight_length;
local_date_time nyc_arrival = phx_arrival.local_time_in(nyc_tz);
std::cout << "departure phx time: " << phx_departure << std::endl;
std::cout << "arrival phx time: " << phx_arrival << std::endl;
std::cout << "arrival nyc time: " << nyc_arrival << std::endl;
}