Different time formats on different time calls - asp.net

I have an ASP.Net application which takes the current time using "DateTime.UTCNow".
While I am accessing the page from the application server itself it shows the time in the format : M/dd/yyyy (10/22/2013 6:45:18 AM)
But if I tries to access this page from another machine/client it shows the format as dd/M/yyyy (22/10/2013 2:44:24 AM).
As a result when I parse this time I am getting error - "String was not recognized as a valid DateTime." in one machine But it works fine in the other machine(server itself).
Please help me to resolve this issue.
Thanks in advance
Siva

In your code every time you read the time, format in M/dd/yyyy eg:
time = DateTime.Now.ToString("M/dd/yyyy"); ///time is the time you read from PC

try this,
var time = DateTime.UtcNow.ToString("MM/dd/yyyy hh:mm:ss tt", System.Globalization.CultureInfo.InvariantCulture);

Try with
time = DateTime.Now.ToShortTimeString();

I have had the same issue. Try setting the regional settings on the client machine to the same as that of the server. It worked for me
EDIT :i want to set my regional setting to english (UK) on load of my program how can i do so?
This should set you on the right path with regional settings

Related

What is the best way to get the date and time in server side?

I'm developing an asp.net mvc3 project. I have a trouble in this problem that I encounter. I will give a scenario so that it will understand well.
Scenario:
I have 2 PC (PC1(server) and PC2(client)). For example both two PC has different date and time let say for PC1 is +8GMT Date 8/10/2016 and for PC2 +8GMT Date 8/9/2016. I am using the PC2 the client and i'm using a code for getting the time is DateTime.Now(); in my controller and the time is display in label in one of my views. I tried to adjust the Date and Time of the PC2 the label for displaying t he time also change. What I want is even I change the Date and Time in PC2 it won't affect/change the displayed Date and Time in my label it will stick on what the Date and Time in the PC1.
This scenario is i'm using/testing the publish project
Any suggestions are welcome.
I'm not sure if I understand the question, but you might consider looking into the DateTime.ToUniversalTime method, which converts the value of the DateTime object to UTC.
This way, you may be able to work with a standard time from which you can convert to any time zone you might want to use to display in your application, regardless of server location.
DateTime serverTime = DateTime.Now;
DateTime utcTime = serverTime.ToUniversalTime;
string timeZoneId = "some time zone id";
TimeZoneInfo myTime = TimeZoneInfo.FindSystemTimeZoneById(timeZoneId);
DateTime label = TimeZoneInfo.ConvertTimeFromUtc(utcTime, myTime);
I am not very clear on your description. It seems as if you want your label to always show the time on the server (PC1) when the web page is loaded on the client by calling the site on the server, maybe like https://pc1. What you're doing should accomplish that: the time displayed in your label will be the system time from the server. Changing the time on the client will not affect it.
If you want your client (PC2) to show its local time, you will need to use code that runs on the client, i.e. JavaScript in most cases.
Working with dates in Javascript can be a little different from other languages/expectations, so I suggest reading the docs at https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date.
Get started with var currentDate = new Date();.

How to set local timezone in Sails.js or Express.js

When I create or update record on sails it write this at updateAt:
updatedAt: 2014-07-06T15:00:00.000Z
but I'm in GMT+2 hours (in this season) and update are performed at 16:00.
I have the same problem with all datetime fields declared in my models.
How can I set the right timezone on Sails (or eventually Express) ?
The way I handled the problem after hours of research :
Put
process.env.TZ = 'UTC'; //whatever timezone you want
in config/bootstrap.js
I solved the problem, you should setting the MySql options file to change timezone to UTC
in the config/connections.js
setting at this
devMysqlServer: {
adapter: 'sails-mysql',
host: '127.0.0.1',
user: 'root',
password: '***',
database: '**',
timezone: 'utc'
},
Trying to solve your problem by setting the timezone on your server is a bit short-sighted. What if you move? Or someone in a different country accesses your application? The important thing is that the timestamps in your database have a timezone encoded in them, so that you can translate to the correct time on the front end. That is, if you do:
new Date('2014-07-06T15:00:00.000Z')
in your browser console, you should see it display the correct date and time for wherever you are. Sails automatically encodes this timestamp for you with the default updatedAt and createdAt fields; just make sure you always use a timezone when saving any custom timestamps to the database, and you should be fine!
The best architecture planning here, IMO, is to continue using Sails.js isoDate formatting. When you're user's load your website/app the isoDate will be converted to their client/browser timezone which is usually set at the OS level.
Here's an example you can test this out with. Open a browser console and run new Date().toISOString() and look at the time it sets. It's going to be based of off the spec for isoDate 8601 (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString).
Now, change your system time to a different time zone or simply change your hour on the time and save (you shouldn't have to reload if you're using chrome console). Run your command in the console again new Date().toISOString() and you'll get an adjusted time appropriate to the time you just changed.
If you'd like to continue on proving to yourself the time Sails.js is appropriate to use, use Moment.js on an isoDate that is stored in your database (created by waterline ORM) like so moment("2016-02-05T22:36:48.800Z").fromNow() and you'll notice the time is relative to your system time.
I've come to grips with not setting a timezone at the app level (I see why the sails authors did it that way), however I've been having a rough time performing a simple date match query. I'd assume that if you create a record using the default blueprint methods (this one containing an extra datetime field over the defaults), passing in a date, that you'd be able to pass in the same date in a get query and get the same record.
For example, let's say the datetime field is called "specialdate". If I create a new record through the api with "specialdate" equaling "06-09-2014" (ignoring time), I haven't been able to run a find query in which I can pass in "06-09-2014" and get that record back. Greater than queries work fine (if I do a find for a date greater than that). I'm sure it's a timezone offset thing, but haven't been able to come up with a solution.

events (as a json feed), start end parameters unix timestamp, are different if I change my OS time zone

I'm using the fullcalendar plugin and would appreciate if someone can give me a hand.
I am getting json events through a PHP URL.
something like this:
$('#calendar').fullCalendar({ events: "/myfeed.php" });
So in my php page that returns the events, I am getting 3 GET parameters:
'_'
'start'
'end'
The start and end parameter, indicate the date in UNIX timestamp.
So far so good, the problem that occurs is that if I change the time zone on my OS. also change these parameters start and end, for the same query in the same day in the calendar.
the weirdest part is that it only happens in Mozilla Firefox.
in Google Chrome, this problem does not occur.
e.g.
I have set my time zone ((UTC-04: 00) Santiago)
I'm referring to the day 09.09.2012 on the agenda,
firebug shows me that these parameters are being sent to my php page
_ 1347245953581
end 1347246000
start 1347159600
but if I change the time zone from my OS to ((UTC-03: 00) Buenos Aires)
consulting on 09.09.2012 on the agenda,
are other parameters which are now sent to the PHP page.
_ 1347246338047
end 1347332400
start 1347246000
Being that it is the same day, are other start and end parameters which are sent to check for events.
There is an ignoreTimezone option on the fullcalendar that might help. I'm not sure if it affects the start/end time passed to the feeds.
http://arshaw.com/fullcalendar/docs/event_data/ignoreTimezone/
Another option is to convert the passed timestamp to a Date object and get the local data from the Date object afterwards and use that in your queries.
Convert a Unix timestamp to time in JavaScript
I know it is not the exact answer, but it might help you out a bit.
Here is a sample piece of PHP code to convert the passed timestamp into a local formatted date:
$startts = $_REQUEST["start"]; // original timestamp
$startdt = new DateTime('now', new DateTimeZone('Europe/Oslo') ); // setup a local datetime
$startdt->setTimestamp($startts); // Set the date based on timestamp
echo $startdt->format('Y-m-d H:i:s'); // Output local date and time

Wrong firstdayofweek set in VB.NET

Hey on a server I am working on I am getting the wrong week day for the current day i.e today
Response.Write(WeekdayName(Weekday(System.DateTime.Now)))
I am getting Thursday, where does this default get set or where can I change it. And it thinks day of the week is 4.
Thanks
The resolution of this property depends on the system timer. If you adjust the server's system time, it should adjust the programs.
It might have to do with the default start of the week. You might try something like:
Response.Write(WeekdayName(Weekday(System.DateTime.Now, _
Microsoft.VisualBasic.FirstDayOfWeek.Sunday)))

How to get different country time into single page using flex or flash (action script 3) because getTime() used for get current time only

i am beginner dont know how do display all country time into a single page using action script 3 in flex . do u know any example time code refer me . i will try that code .
In Actionscript/Flex, you can only get either the local time, which is from the user's operating system, or the UTC time. You'll have to find a way of converting UTC to the user's time - or use externalInterface to communicate with something like java.
In Java you can use Calendar.getInstance(TimeZone zone) method to create a Calendar object of a timezone. TimeZone.getAvailableIDs() will give you list of inbuild timezones supported by Java. You can find out the timezones you want and using the id can create the TimeZone object from TimeZone.getTimeZone(String ID)

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