I get a time value from an API which is a unix value, but when i use DateTime.fromMillisecondsSinceEpoch, it shows one day less. I don't understand why. Please explain me what i'm doing wrong.
I think timezones made the problem, but i don't know how to fix it.
Unix value from API
1623283201 // 2021-06-10 0:00:01.000
This is my code
var date = DateTime.fromMillisecondsSinceEpoch((json['time_last_update_unix']) * 1000);
print("This is the date " + date.toString()); // 2021-06-09 20:00:01.000
If your date input carrying a time zone which is not your local timezone, you have to explicitly change the following bool value
bool isUtc = true
Default value is false and date is identified from your local timezone.
For more detail please refer this link
https://api.flutter.dev/flutter/dart-core/DateTime/DateTime.fromMillisecondsSinceEpoch.html
Related
The code is as follows:
DateTime time = DateFormat("hh:mm").parse(doc[i]["Time"]);
The doc[i]["Time"] value is supposed to be a military time like 19:42. I followed the guidelines about using DateFormat but the end result variable time contains "1970-01-01 19:42:00.000". Is there a way for time to just contain "19.42"?
To get time in 24hrs format change your code to
String time = DateFormat("HH:mm").format(doc[i]["Time"]);
H -> is for 24 hours format
It is not possible to use DateTime to show a specific format, must always become a String.
A DateTime type will always store everything including year, month, hour, minutes, seconds, milliseconds, etc.
But when you later use the variable, you can chose what to display.
For example, you can chose to display just the military time. Here is one example using the Intl package (here)
Text(DateFormat('Hm').format(yourVariable))
Don't forget to import
import 'package:intl/intl.dart';
I have a page with #material-ui/pickers
<TimePicker .. value={value}/> /* value == 2020-12-24T13:05:10.714Z */
The value in the example is a zoned datetime string coming the from server.
My time zone is +2:00, Ukraine/Kiev.
The problem is that rendered time is 15:05. Is this behaviour normal when input value is zoned datetime?
I would like to see 13:05. Is this the server that provides me with incorrect datetime format or is it me misusing #meterial/pickers and #date-fns ?
2020-12-24T13:05:10.714Z is an ISO-8601 datetime string. The suffix Z means that the time is in UTC (see wikipedia). The rendered time of 15:05 in your +02:00 zone matches that.
So yes, if your server meant to specify 13:05 Kiev time, it's using the wrong format or the wrong time. It should say 2020-12-24T11:05:10.714Z or 2020-12-24T13:05:10.714+02:00.
--eval "var date = new Date(); date.setDate(date.getDate()-10)"'
pause
new Date() gives me the current date. I'm trying to get 10 days back date,but setDate() not setting the date correctly.I'm doing it through batch script.
I got this 1576031482772 after evaluating date.setDate(date.getDate()-10) .Please help me find a solution.
This is the expected behavior. The signature of setDate is as follows. ref
Parameters
It accepts one parameter, it should be number as a day value.
Return Value
It returns milliseconds between 1 January 1970 00:00:00 UTC and the given date
Solution
You are actually setting the day value of date. So If you want to retrieve the value, just use date.getDate(). Which will be the new date.
For more details, how it works, you can refer MDN.
I'm currently working with embarcadero c++, this is the first time I'm working with it so it's completely new to me.
What I'm trying to achieve is to get the current date, make sure the date has the "dd/MM/yyyy" format. When I'm sure this is the case I want to add a month to the current date.
So let's say the current date is 08/18/2016 this has to be changed to 18/08/2016 and then the end result should be 18/09/2016.
I've found that there is a method for this in embarcardero however I'm not sure how to use this.
currently I've only been able to get the current date like this.
TDateTime currentDate = Date();
I hope someone will be able to help me out here.
I figured it out.
After I've searched some more I found the way to use the IncMonth method on this page.
The example given my problem is as follows:
void __fastcall TForm1::edtMonthsExit(TObject *Sender)
{
TDateTime StartDate = edtStartDate->Text;
int Months = edtMonths->Text.ToInt();
TDateTime NextPeriod = IncMonth(StartDate, Months);
edtNextPeriod->Text = NextPeriod;
}
After looking at I changed my code accordingly to this
TDateTime CurrentDate = Date();
TDateTime EndDate = IncMonth(CurrentDate, 1);
A date object doesn't have a format like "dd/MM/yyyy". A date object is internally simply represented as a number (or possibly some other form of representation that really isn't your problem or responsibility).
So you don't have to check if it's in this format because no date objects will ever be in this format, they simply don't have a format.
You will have to do additions/subtractions on the Date object that the language or library gives you, THEN (optionally) you can format it to a human-readable string so it looks like 18/08/2016 or 18th of August 2016 or whatever other readable format that you choose.
It might be that the TRANSFER of a date between 2 systems is in a similar format, but then formatting the date like that is entirely up to you.
As for how to do that, the link you posted seems like a possible way (or alternatively http://docwiki.embarcadero.com/Libraries/Berlin/en/System.SysUtils.IncMonth), I'm afraid I can't give you an example as I'm not familiar with the tool/language involved, I'm just speaking generically about Date manipulations and they should ALWAYS be on the raw object.
I am trying to compare and check the date if it is today's date or not in a spesific program. I tried to use assertion method but when I use it the time will remain same if you try it next day. The main problem that I need to know when open a page from program It should be today's date and should be passed. if you know already anything about it please let me know also :)
Thanks yo!
Use System.DateTime.Now.ToString("yyyy-MM-dd") as one argument of the assertion. You may need to use a different format rather in the ...ToString() method. The exact format depends on how the date is shown on the screen.
This could be done using "StringAssert" to verify that your programs date string contains today's date string, while ignoring the time:
var programDateString = "7/25/2016 12:00:00"; //this is an example of your date retrieved from the application with time included
var todaysDate = System.DateTime.Today.ToShortDateString(); //short date string
StringAssert.Contains(programDateString, todaysDate);