How to avoid error of JavaScript date formatting

Question

I'm using the DHTMLX Scheduler in my web app and want to get the data for each event and found a way to do it with scheduler._events which returns this:

1581498064943: {…}

_eday: 2    
_end_date: undefined    
_first_chunk: true    
_last_chunk: true    
_length: 1    
_sday: 1    
_sorder: 0   
_sweek: 0    
_timed: true    
end_date: Date Tue Jan 02 2018 00:05:00 GMT+0100 (Central European Standard Time)    
event_length: ""    
event_pid: ""    
id: 1581498064943    
rec_pattern: ""
rec_type: ""    
start_date: Date Tue Jan 02 2018 00:00:00 GMT+0100 (Central European Standard Time) 
text: "New event"

the problem is when I convert it into a string to store it as a JSON later, JavaScript converts dates into iso 8601 and loses a day in the conversion:

"1581498064943": {
        "start_date": "2018-01-01T23:00:00.000Z",
        "end_date": "2018-01-01T23:05:00.000Z",
        "text": "New event",
        "id": 1581498064943,
        "_timed": true,
        "_sday": 1,
        "_eday": 2,
        "_length": 1,
        "_sweek": 0,
        "_sorder": 0,
        "_first_chunk": true,
        "_last_chunk": true,
        "event_pid": "",
        "event_length": "",
        "rec_pattern": "",
        "rec_type": ""

2018-01-02 becomes 2018-01-01

Because letter "Z" in ISO-8601 means Coordinated Universal Time (UTC) and it is GMT+0000. It's the same time, in other time-zone. — NoSkill
– NoSkill, Commented Feb 12, 2020 at 9:49

Sourav · Accepted Answer · 2020-02-12 09:51:09Z

1

It's not reducing oneday. It's because of your timeZone. check the following code.

var x= new Date("Date Tue Jan 02 2018 00:05:00 GMT+0100 (Central European Standard Time)")

x.toISOString()

y = new Date(x)

You will get the initial date again. So, to use it from the JSON again you need that ISOstring to be converted again

answered Feb 12, 2020 at 9:51

Sourav

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Comments

Abdul Hameed · Accepted Answer · 2020-02-12 09:58:13Z

0

Better try with Unix epoch seconds format to resolve this issue.

const now = Date.now(); // Unix timestamp in milliseconds
console.log( now );

Once you convert this you can retrieve the same exact time based on your local region specification.

var utcSeconds = 1581501372817/1000;
var d = new Date(0); // The 0 there is the key, which sets the date to the epoch
d.setUTCSeconds(utcSeconds);
console.log(d);

answered Feb 12, 2020 at 9:58

Abdul Hameed

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1 Comment

S P H I N X U S Over a year ago

thank you ! i'll use that it is more relevant in my case ^^

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