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Getting wrong date in Node.js

I tried all the solutions i found here but none work.
Im just trying:
var a = new Date();
console.log(a);
//2020-01-12T05:05:17.320Z
//Time in my timezone: 2020-01-12T02:05:17.320Z
I'm from Brazil, o the timezone is -3:00
I already installed moment.js and tryed:
var moment = require('moment-timezone');
moment().tz("America/Sao_Paulo").format();
var a = new Date();
console.log(a);
but i keep getting whithout my timezone. I also tryed setting the TZ without the moment.js and didn't work.
I cant use some solution that change the way to call the "new Date()" because I have to parse a string to an object that contains Date and I use Prompts module, that get a date from console, that already return a date. I don't know what to do more.
Thanks for any help.
*I'm running on Windows, and the time is right, the configuration is pointing to the right timezone
edit1: more info

The best way that I found was add 'getTimezoneOffset' (minutes) using moment.js
//Will returns the current "wrong" time in formart '2020-09-29T19:47:46.411Z'
//Expect: 2020-09-29T16:47:46.411Z
console.log(new Date())
So if you want see the full date in format ('DD-MM-YYYY HH:mm') of any object
var moment = require('moment')
// specificDay is a Date (type: Object) like '2020-09-22T00:00:00.000Z'
// previously retrieved from the database without information about the time('HH:mm')
// Only with 'YYYY-MM-DD'
moment(specificDay, "YYYY-MM-DD").add(new Date().getTimezoneOffset(),'minute').format('DD-MM-YYYY HH:mm')

You're very close. Moment is a Javascript library that makes formatting time very easy. You are creating your moment object, but you're not outputting it.
I made a very slight change (2nd line) and it works as expected:
var moment = require('moment-timezone');
console.log(moment().tz("America/Sao_Paulo").format());
If you want it formatted nicely, see this page: https://momentjs.com/.
For example:
console.log(moment().tz("America/Sao_Paulo").format('lll'));
// output: Jan 12, 2020 2:45 AM
How does it work?
moment() creates a time object (just like new Date(), but it's moment's special time object). .tz() is calling the timezone function and we give it your time zone as a string "America/Sao_Paulo". .format() then outputs it in a nice custom string. console.log() outputs the whole string to the screen.

Node takes UTC timestamp
https://www.google.com/search?client=firefox-b-d&q=current+utc+time+online
So you can convert to a locale string and after that create a new date. This is a example for mexico city
let mx = (new Date()).toLocaleString('se-SE',{ timeZone: 'America/Mexico_City'}) + "Z";
return new Date(mx);

momentjs toDate() date return not same as format() date

I am using moment 2.16.0 and want starting days of month. There are different result of toDate() and format() method. Here is jsfiddle.
code:-
var time=moment().subtract(0,'months').startOf("month").format();
console.log(time); //2016-12-01T00:00:00+05:30
var time2=moment().subtract(0, 'months').endOf("month").format();
console.log(time2); //2016-12-31T23:59:59+05:30
var time=moment().subtract(0,'months').startOf("month").toISOString();
console.log(time); //2016-11-30T18:30:00.000Z here i want somethings like 2016-12-01T00:00:00.000Z
var time2=moment().subtract(0, 'months').endOf("month").toISOString();
console.log(time2); // 2016-12-31T18:29:59.999Z here i want somethings like 2016-12-31T59:59:59.000Z

All of your operations are using moment with local time except the toISOString, which will give you the string in UTC. Since your timezone is offset from UTC, naturally the local time string (from format) and the UTC time string (from toISOString) are very different.
here i want somethings like 2016-12-01T00:00:00.000Z
That would be a different time from what that Moment instance represents.
If you want something in an ISO-8601 format but in local time, you can use format with the appropriate set of formatting tokens, but you don't wan the Z at the end because, again, you're not dealing with UTC ("Zulu") time, you're dealing with local time.
moment().format("YYYY-MM-DDThh:mm:ss.SSS")

Having troubles with converting time in iso using java

I use the below code to format date time in iso format using java (I'm reducing 1 min from current time) and get the output as this "2016-03-17T11:38:21.xxxZ" < x represent some numbers> i want this to compare with the time which have mentioned in the DB.
Person who build that data insert query, he used javascript to get the time and format it in iso.
Date inside the DB is looks like this "2016-03-17T06:09:21.530Z" and its actual time is "11:39:21 GMT+0530 (India Standard Time)" which is similar to my current time but I'm comparing these two dates as string. and get 1min early data from DB.In that case i can't get an out put because as strings these two aren't match. can anybody recomand a solusion ?
I use OrientDB
Java Code
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
Calendar date = Calendar.getInstance();
long t = date.getTimeInMillis();
date.setTimeInMillis(t);
date.set(Calendar.MINUTE, date.get(Calendar.MINUTE) - 1);
String time1minEarly = df.format(date.getTime());

Using Calendar.set() and Calendar.get() does not modify the date in a way you intend:
This will modify the minutes field in your case. So subtracting "1" will reduce the minute but not give a viable date for cases where minute initially is zero.
You may just subtract a minutes of milliseconds from your "t" variable to get a true minute offset.
And for ease of use you might also consider following advise from #Prashant and using LocalDateTime class from joda library.

Thanks Everybody for your support.
I figure out How to do this. it's pretty easy. Both #rpy and #Prashant are correct. Calendar is not suitable for solve my issue. Also LocalDateTime too. but it did help me to figure out the correct way.
#rpy and #Prashant they both did miss one thing that the javascript time represent the UTC time. that's the issue. (it's 5.5 hours behind compared to my location) so, I figure out this below code. it did what i wanted to do.
It's pretty easy. all you have to do is provide your zone id.
(You can get Zone id using this code : go to the link - http://www.javadb.com/list-possible-timezones-or-zoneids-in-java/)
Also you can choose so many formats by changing "DateTimeFormatter" value.
ZoneId UTCzoneId = ZoneId.of("UTC");
ZonedDateTime time1minEarly = ZonedDateTime.now(UTCzoneId).minusMinutes(1);
String UTCtime1minerly = time1minEarly.format(DateTimeFormatter.ISO_INSTANT);
Out put is similar to this : "2016-03-17T10:39:21.530Z"
(- UTC time at that time : 2016-03-17T10:40:21.530Z)

Moment.js Convert Local time to UTC time does work

I would like to use Moment.js to convert a local time to UTC equivalent. I believe that I have the correct method in place, but it does not alter the time.
I'm in Sydney Australian +11 and expect the UTC time to be 11 hours earlier.
Internally on the moment object the isUTC flag changes from false to true, but the time does NOT shift, am I meant to use a different technique for this.
How do I actually get the current UTC date out of this object
Before Conversion
var val = '18/03/2015';
var selectedDate = moment(val, 'DD/MM/YYYY');
After Conversion
var a = selectedDate.utc()

I just tried this code and it seems like I get the correct UTC time. I guess I just want to confirm that what I am doing is correct way to access the UTC time from moment.js
a.format("YYYY-MM-DD HH:mm:ssZ")
I found that my usage pattern of in my application was incorrect
selectedDate.utc().format(fullFormat)
It should have been
moment.utc(selectedDate).format(fullFormat)

This works
moment(date_to_convert).utc().format("YYYY-MM-DD HH:mm:ss");

The question is old, but I also faced it. It may be useful to someone:
Using the method of utcOffset() to calculate the UTC time:
selectedDate = (moment(selectedDate).add(-(moment().utcOffset()), 'm'));
And explicitly specify UTC:
selectedDate = moment.parseZone(selectedDate).utc().format();

This is how you do it using moment-timezone
moment.tz(localDate, localTimeZone).utc()

This worked for me !!
selectedDate = moment(selectedDate).add(moment(selectedDate).utcOffset(), 'm').utc().format()

Create a local moment object from you local time and convert it to UTC then format it, then create a new UTC moment from that formatted UTC string
var localDateString = '24/04/2019';
var localDateStringFormat = 'DD/MM/YYYY';
var utcMoment = moment.utc(moment(localDateString, localDateStringFormat ).utc().format('YYYY-MM-DD HH:mm:ssZ'))
console.log(utcMoment);
<script src="https://momentjs.com/downloads/moment.js"></script>

After few frustrating hours, I found what was the problem
Short Answer: To convert time to utc, we need to use format()
Long Answer: Take the example
moment.utc(1559586600000).format('LLL')
.utc sets the isUTC flag to true.
When logging the date, the d key always shows the time in local timezone. (Which makes us believe its not working properly - as shown in your screenshot)
But we need to use .format to get the date/time in UTC format.
The above code returns June 3, 2019 6:30 PM which is the correct UTC time.

const moment = require('moment-timezone');
const dateTime='2020-12-21'
const timezone='America/Anchorage'
const dateTimeInUtc = moment(dateTime).tz(timezone).utc().format();
console.log('dateTimeInUtc',dateTimeInUtc);

const moment = require('moment-timezone');
const dateTime='2020-12-21'
const timezone='America/Anchorage'
const dateTimeInUtc = moment(dateTime).tz(timezone).utc().format();
console.log('dateTimeInUtc',dateTimeInUtc);

After few frustrating hours, I found what was the problem
Short Answer: To convert time to utc, we need to use format()
Long Answer: Take the example
moment.utc(1559586600000).format('LLL')
.utc sets the isUTC flag to true.
When logging the date, the d key always shows the time in local timezone. (Which makes us believe its not working properly - as shown in your screenshot)
But we need to use .format to get the date/time in UTC format.
The above code returns June 3, 2019 6:30 PM which is the correct UTC time.

Time Zone Offset Calculations

Let's suppose the server gives the date in this format:
var date = '2012-08-08T15:04:33+0200';
As you can see the previous date has a Timezone offset of two hours.
Let's suppose I need to display the same date in different places having different timezone.
What is the proper way to display the date in different clients having the different time zone using moment.js
I did try the following but I am not sure because I cannot test it.
moment(date, "YYYY-MM-DDTHH:mm:ss").fromNow();

According the documentation it should be enough just passing the following parameter ´Z´ or ZZ according your date format.
So in your case it should be:
var date = '2012-08-08T15:04:33+0200';
moment(date, "YYYY-MM-DDTHH:mm:ssZ").fromNow();