16/1/119 23:55:0
16/1/119 23:55:0

16/1/119 23:60:0
16/1/119 23:0:0

16/1/119 23:5:0
16/1/119 23:5:0

16/1/119 23:10:0
16/1/119 23:10:0

16/1/119 23:15:0
16/1/119 23:15:0

#include <stdio.h>
#include <time.h>

int main()
{
    struct tm dt_stream;
    int i;

    dt_stream.tm_mday = 16;
    dt_stream.tm_mon = 1; //02 Fev;
    dt_stream.tm_year = 19 + 2000 - 1900; //2019
    dt_stream.tm_hour = 23;
    dt_stream.tm_min = 50;
    dt_stream.tm_sec = 0;


    for ( i=0; i<5; i++) {
        dt_stream.tm_min = dt_stream.tm_min + 5;

        printf("%d/%d/%d %d:%d:%dn", dt_stream.tm_mday, dt_stream.tm_mon, dt_stream.tm_year,
                               dt_stream.tm_hour,dt_stream.tm_min, dt_stream.tm_sec);


        mktime(&dt_stream);

        printf("%d/%d/%d %d:%d:%dn", dt_stream.tm_mday, dt_stream.tm_mon, dt_stream.tm_year,
                              dt_stream.tm_hour,dt_stream.tm_min, dt_stream.tm_sec);

        printf("*****n");
    }

    return 0;
}