The fromMicrosecondsSinceEpoch function of DateTime class is not working properly

[floitschG]

From @disburden on May 29, 2018 10:30

  DateTime dd = new DateTime.fromMicrosecondsSinceEpoch(1527310817);
  print("date:$dd");

No matter how the parameters change, the displayed results are always the same flutter: date:1970-01-01 08:25:17.310817 flutter: date:1970-01-01 08:25:17.310817

(dart 2.0)

_Copied from original issue: dart-lang/dart_enhancementproposals#49

[floitschG]

/cc @disburden Could you please provide more information on what you would expect and what is going wrong? Thanks.

[disburden]

No detail required. Just create a new project and run those two stantements,you can't get the date from the timestamp.

[jakobr-google]

We're asking for more details because the sample you've given seems to work just fine. I tried with a couple of different values:

void main() {
  DateTime dd = new DateTime.fromMicrosecondsSinceEpoch(1527310817);
  print("date:$dd");
  dd = new DateTime.fromMicrosecondsSinceEpoch(4322527310817);
  print("date:$dd");
  dd = new DateTime.fromMicrosecondsSinceEpoch(164322527310817);
  print("date:$dd");
  dd = new DateTime.fromMicrosecondsSinceEpoch(0);
  print("date:$dd");
}

Which gave this result:

date:1970-01-01 01:25:27.310817
date:1970-02-20 01:42:07.310817
date:1975-03-17 22:08:47.310817
date:1970-01-01 01:00:00.000

[disburden]

Maybe I made a mistake. I use this statement to get a timestamp for today's date

final timeStamp = new DateTime.now().millisecondsSinceEpoch.toString();
print("timeStamp:$timeStamp");

flutter: timeStamp:1527600563023

Why by fromMicrosecondsSinceEpoch methods are not returned to the corresponding date?

DateTime dd = new DateTime.fromMicrosecondsSinceEpoch(1527600563023);
print("date:$dd");

flutter: date:1970-01-19 00:20:00.563023 ???

[jakobr-google]

Because you're getting milliseconds in the first part, and using them as microseconds in the second part.

Try using

final timestamp = new DateTime.now().microsecondsSinceEpoch;

instead.

[jakobr-google]

(or if you don't need micro-second resolution, use new DateTime.fromMillisecondsSinceEpoch() in the second part.)

[disburden]

I'm sorry for the trouble,It's my fault. The names of the two methods are so similar that I didn't notice them

@jakobr-google TKS!

pls close!

[jakobr-google]

No worries. :) Thanks for the extra details!

[khaliqdadmohmand]

just use

var date = new DateTime.fromMillisecondsSinceEpoch(
                      int.parse(1527600563023));
print('date: $date');

[hanniiel]

hi there, it seems that is not working again. DateTime.fromMicrosecondsSinceEpoch(1589849381, isUtc: true) or DateTime.fromMillisecondsSinceEpoch(1589849381, isUtc: true) even if isUtc is true or false always returning 1970-01-18.....

UPDATED: got it working by multiplying by 1000 DateTime.fromMillisecondsSinceEpoch(1589849381*1000, isUtc: true) should it work this way? thanks in advance.

environment: sdk: ">=2.6.0 <3.0.0"

`# Generated by pub

See https://dart.dev/tools/pub/glossary#lockfile

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