> For the complete documentation index, see [llms.txt](https://javascriptuse.gitbook.io/javascript/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://javascriptuse.gitbook.io/javascript/time-date-full-ok.md).
# Time, Date full (ok)
Đọc thêm: [https://app.gitbook.com/o/-LYjAG1--qK4zFZOXpzU/s/-M1E4Gk2ppVKb4olmnun/calculate-working-days-between-two-dates-in-javascript-excepts-holidays-ok](/javascript/advanced/calculate-working-days-between-two-dates-in-javascript-excepts-holidays-ok.md)
a1
Part 1
```
Document
// 1435942800000
// 1435942820000
```
Part 2
```
Document
```
Part 3
```
Document
Number of seconds since Dec, 10, 2021: 39548
Number of seconds since Dec, 10, 2021: 39548
Number of minutes since Dec, 10, 2021: 659
Number of minutesRound since Dec, 10, 2021: 59
Number of hous since Dec, 10, 2021: 10
Number of days since Dec, 10, 2021: 0
Number of weeks since Dec, 10, 2021: 0
Number of months since Dec, 10, 2021: 0
Number of years since Dec, 10, 2021: 0
```
Part 4
```
Document
Number of minutes since: 60
Number of seconds since: 3600
```
Part 5
```
JS Bin
```
Part 6 Converted date: 2021-12
```
Document
```
Part 7: Tính số năm công tác của nhân viên
```
My First JavaScript
```
```javascript
/*Hàm tính số ngày trong tháng javascript*/
const get_day_of_month = (year, month) => {
return new Date(year, month, 0).getDate();
};
const get_day_of_month = (year, month) => {
return new Date(year, month, 0).getDate();
};
let thang2 = get_day_of_month(2021, 2); //28
let thang3 = get_day_of_month(2021, 3); //31
/*Hàm tính khoảng cách giữa 2 ngày trong javascript*/
const get_day_of_time = (d1, d2) => {
let ms1 = d1.getTime();
let ms2 = d2.getTime();
return Math.ceil((ms2 - ms1) / (24*60*60*1000));
};
const get_day_of_time = (d1, d2) => {
let ms1 = d1.getTime();
let ms2 = d2.getTime();
return Math.ceil((ms2 - ms1) / (24*60*60*1000));
};
let birthday = new Date('2019-10-08');
console.log(birthday.toUTCString());
//Tue, 08 Oct 2019 00:00:00 GMT
let today = new Date();
console.log(today.toUTCString());
//Wed, 22 Dec 2021 01:30:49 GMT
let time = get_day_of_time(birthday,today)
console.log(time+ ' day');
//807 day
j
```
---
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