SECS_PER_MIN
#define TIMEZONE_SEC(x) ((x) * 15 * SECS_PER_MIN)
ts->tv_sec -= exfat_tz_offset(sbi) * SECS_PER_MIN;
sys_tz.tz_minuteswest) * SECS_PER_MIN;
second += ((time >> 5) & 0x3f) * SECS_PER_MIN;