Crate com_local_time 

SystemTime { tv_sec: 1717411455, tv_nsec: 637180000 }

컴퓨터 시간만으로 우리나라 시간 및 다른 나라 시간 구하기

Example

let sys_time = SystemTime::now();
println!("{}", sys_time);

Result

SystemTime { tv_sec: 1717411455, tv_nsec: 637180000 }

---

Example

let sys_local_time = com_local_time::localtime();

---

Result

2024년 6월 3일 금요일, 19: 41: 19

---

use std::{ io::Write,
    thread::sleep,
    time::{SystemTime, UNIX_EPOCH},
};

const SEC_IN_MIN: u64 = 60;
const SEC_IN_HOUR: u64 = 60 * SEC_IN_MIN;
const SEC_IN_DAY: u64 = 24 * SEC_IN_HOUR;
const SEC_IN_YEAR: u64 = 365 * SEC_IN_DAY;
const SEC_IN_LEAP_YEAR: u64 = 366 * SEC_IN_DAY;

fn is_leap_year(year: u64) -> bool {
    (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)
}
fn main() {
   loop {
       let total_sec: u64 = SystemTime::now()
           .duration_since(UNIX_EPOCH)
           .expect("Time went backwards")
           .as_secs();

       let mut remaining_sec = total_sec;

       // Calculate the current year
       let mut year = 1970;
       while remaining_sec >= SEC_IN_YEAR {
           let year_seconds = if is_leap_year(year) {
               SEC_IN_LEAP_YEAR
           } else {
               SEC_IN_YEAR
           };
           if remaining_sec < year_seconds {
               break;
           }
           remaining_sec -= year_seconds;
           year += 1;
       }

       // Calculate the current month and day
       const DAYS_IN_MONTH: [u64; 12] = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
       const DAYS_IN_LEAP_MONTH: [u64; 12] = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
       const DAYS_OF_WEEK: [&str; 7] = ["월", "화", "수", "목", "금", "토", "일"];

       let days_in_month = if is_leap_year(year) {
           &DAYS_IN_LEAP_MONTH
       } else {
           &DAYS_IN_MONTH
       };

       let mut month = 0;
       let mut days = remaining_sec / SEC_IN_DAY;
       remaining_sec %= SEC_IN_DAY;

       while month < 12 && days >= days_in_month[month] {
           days -= days_in_month[month];
           month += 1;
       }

       // Calculate the current hour, minute, and second
       let hours = remaining_sec / SEC_IN_HOUR;
       remaining_sec %= SEC_IN_HOUR;
       let minutes = remaining_sec / SEC_IN_MIN;
       let seconds = remaining_sec % SEC_IN_MIN;

       let day_of_week_cal = (days + 2) % 7;
       let week_cal = DAYS_OF_WEEK[day_of_week_cal as usize];

       print!(
           "\r{}년 {}월 {}일 {}요일, {}: {}: {}",
           year,
           month + 1,
           days + 1,
           week_cal,
           hours + 9,
           minutes,
           seconds,
       );
       std::io::stdout().flush().unwrap();
       sleep(std::time::Duration::from_secs(1));
   }
}

Result

2024년 6월 3일 금요일, 19: 41: 19

Functions

localtime