Timestamp to DateTime in JavaScript

1. Convert Timestamp to DateTime in JavaScript

Now we have got the UNIX timestamp in milliseconds the next step is to convert it to date and time. In the below example we get the datetime form by using date class methods

The date class methods help us get the date in different formats as per need.

• getDate():Use to get day of calendar month 1 to 31.
• getMonth(): Use to get month number 0 to 11.
• getFullYear(): Use to get year in 4-digits format.
• getHours():Use to get the hour in 24-hour format.
• getMinutes():Use to get the minutes 0 to 59.
• getSeconds() : Use to get seconds 0 to 59.

JavaScript Program to Unix timestamp to DateTime

In this example, we have used getime() method to get the UNIX timestamp in milliseconds and create an object of the date class and use its method to get datetime.

By using the hard code value instead of finding the current timestamp.

//get unixtimestamp usng gettime() method
const current_timestamp = new Date().getTime() 
console.log(current_timestamp);

var  date = new Date(current_timestamp);

console.log("Full date: "+date.getDate()+"/"+(date.getMonth()+1)+
          "/"+date.getFullYear()+" "+date.getHours()+   
          ":"+date.getMinutes()+":"+date.getSeconds());


//by using hard code value of timestamp
var millsecond = 1634660514*1000;
var  date = new Date(millsecond);

console.log("Full date: "+date.getDate()+"/"+(date.getMonth()+1)+
          "/"+date.getFullYear()+" "+date.getHours()+   
          ":"+date.getMinutes()+":"+date.getSeconds());

Output

Full date: 19/10/2021 16:17:40
Full date: 19/10/2021 16:21:54

2. toDateString() to Convert timestamp to date in JavaScript

In this example, we are using the todateString() method to get the date from UNIX epoch time/unixtimestamp.

JS Program to convert unix timestamp to date

var millsecond = 1634617314*1000;
var date = new Date(millsecond).toDateString();
console.log(date)

Output

Tue Oct 19 2021

3. Convert timestamp to different timezone

To convert Unix timestamp tolocalstring() function is used to convert a date object to a string based on passed argument value convert date to a different timezone.

Synatx

tolocalstring(locales,options)

Parameters

• Locales: The locales is an array of locale strings that is language-specific format based on national geography. In the below example, we have used “en-US”.
• options: It conatins more property that represent comparsion options.

JS Program unix timestamp to different timezone

We can change the locales as per need from the below locales tables.

//get datetime 
var millsecond = 1634660514*1000;
var datetime = new Date(millsecond).toLocaleString("en-US");
console.log('datetime=,datetime)

//get date only 
var date = new Date(millsecond).toLocaleDateString("en-US");
console.log('date=',date)

//get time only
var time = new Date(millsecond).toLocaleTimeString("en-US");
console.log('time=',time)

//by using the second options parameters
var datetime = new Date(millsecond);
var datestr = datetime.toLocaleString();
console.log(datestr)




console.log(datetime.toLocaleString("en-US", {dateStyle: "full"}))
console.log(datetime.toLocaleString("en-US", {weekday: "long"}))
console.log(datetime.toLocaleString("en-US", {timeZoneName: "long"}))
console.log(datetime.toLocaleString("en-US", {hour: "2-digit"}))

Output

dateTime = 10/19/2021, 4:21:54 PM
date = 10/19/2021
Time = 4:21:54 PM

10/19/2021, 4:21:54 AM
Tuesday, October 19, 2021
Tuesday
10/19/2021, 4:21:54 AM Coordinated Universal Time
04 AM

Tables of locals for different timezone

Summary

In this post, we have learned how to convert Timestamp to DateTime in JavaScript.how to get Timestamp. How to convert timestamps at different timezone.