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Django-models Change format of dateField as "DD-MM-YYY"

I am using django-model's-dateField in my django-project and wanna change my dateFields format in admin view.
Currently (default) django gives format in YYYY-MM-DD but i want to modify that and in need of DD-MM-YYYY
I've been struggled too much in this and till no solution.
Also providing my code, may help..
my settings.py have:
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
models.py:
class UserProfile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE, related_name='User_Profile')
mobile = models.BigIntegerField()
alternative_number = models.BigIntegerField()
DOB = models.DateField()
and then i register it in admin
output on admin
as you can see in my admin page there is a dateField with format 2019-11-04 but i want in form of DD-MM-YYYY as 04-11-2019.
I tried LANGUAGE_CODE = 'de-at' that would work for me but the problem is, it changes the local language also.
refering a similer post:
Django - change default presentation format of model date field

You need just to override Django’s defaults locale settings. Add this to your settings.py file
from django.conf.locale.es import formats as es_formats
es_formats.DATETIME_FORMAT = "d M Y H:i:s"

fahim kazi was right: to define a models.DateField format, you need DATE_FORMAT, not DATETIME_FORMAT.
Yet Naveen Varshney was also right: not DATE_FORMAT nor DATETIME_FORMAT work without specifying the language, with es_formats for instance.
Therefore, from the combination of both answers, put the following in settings:
es_formats.DATE_FORMAT = 'd-m-y'
(Also '%d-%m-%y' printed %01-%08-%20 thus the % is not needed).
Thanks both.

add this to your settings.py
DATE_FORMAT = '%d-%m-%y'
for more check this date format

Working with several time zone in Django

The application I am working on has as target users USA. And (as you may know) in USA there's more than one time zone. So I have some doubts:
so how could I get the current time in server side based on the
current user?
And how could I store DateTime data to show the correct time for
every user?
How can I compare times (example: user.event.created > datetime.now())? What timezone will .now() use?
What TIME_ZONE should I set in settings.py file.
This is for an API, to grab user's timezone via JS is not an option. I get the current user via TokenAuthentication.

Use UTC for settings.py and grab their timezone offset from Javascript:
var utcOffset = -((new Date()).getTimezoneOffset()) / 60;
e.g. for Los Angeles right now utcOffset == -7
Unfortunately this doesn't account for Daylight Savings Time changes later (offset changes to -8), so you may have to figure that out at the time of retrieval in order to get Pacific/Los_Angeles. Otherwise you could always just ask the user in a signup form if it's important for your business.
EDIT: Since you're using an API, you could also try using the IPInfoDB API to geolocate based on client IP address. It's not always completely accurate, but almost always enough to get the correct timezone.

Don't use datetime.now(), use the now() function in the timezone module instead.
from django.utils import timezone
now = timezone.now()
Django will figure out which timezone you are in and compare them accordingly.
user.event.created > timezone.now()
https://docs.djangoproject.com/en/1.8/topics/i18n/timezones/

The solution is to always store unix timestamps in the database. You can generate with time.time() . That means your model should have a Floatfield (or even a BigIntegerField depending on the accuracy needed).
Your template should display the numeric value as it is. Then you need a tiny bit of javascript to convert that unix timestamp to a date time.
new Date(unix_timestamp);

The users of your webapp may be in different time zones, so the conversion to an appropriate time zone is necessary. You can create a middleware and use activate function to set the appropriate time zone. You can get the client-side timezone by doing an ajax api call to Free IP Geolocation API in your landing page and the timezone value can be saved in a cookie variable which can be later accessed in the middleware.
landingpage.html
<script>
$.ajax({
url: 'https://freegeoip.app/json/',
dataType: 'json',
success: function (data) {
document.cookie = 'timezone=' + data['time_zone'] + '; path=/';
}
});
</script>
middleware.py
import pytz
import requests
from django.utils import timezone
class TimezoneMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
tzname = request.COOKIES.get('timezone')
if tzname:
timezone.activate(pytz.timezone(tzname))
else:
timezone.deactivate()
return self.get_response(request)
settings.py
MIDDLEWARE = [ ........
'projectname.middleware.TimezoneMiddleware',
]

Django DateTimeField from form to UTC

I have a small Django app with a form, wich saves some data to the DB.
Here's the form:
class SomeForm(forms.Form):
time = forms.DateTimeField()
...
And the view, where I save it:
class AccountAddIncome(View):
def save(self, form):
model = Model(
time=form.cleaned_data['time']
)
model.save()
def post(self, request, *args, **kwargs):
form = SomeForm(request.POST)
if form.is_valid():
self.save(form)
return redirect(self.success_url)
else:
...
My problem is, that the Django admin says: "Note: You are 1 hour ahead of server time."
The date command on my Ubuntu (the server) says exactly the same date as my computer has.
But, when I save this object in the DB, and make the following query:
Model.objects.filter(time__lt=timezone.now())
django do not list the previously saved model for an hour. If I go to the admin, and set the time back one hour, django'll show that object.
So, my question is, what's the best practice, to manage datetime objects in django?
I want to save everything in UTC, but I cannot convert that datetime from the form to UTC.

go to settings.py of your Django project
comment timezone settings and use TIME_ZONE = timezone.now()
from django.utils import timezone
TIME_ZONE = timezone.now()
# TIME_ZONE = 'UTC'
# USE_I18N = True
# USE_L10N = True
# USE_TZ = True
Than you will never see this - Note: You are 1 hour ahead of server time.

Django, queryset, filter today

I'm trying to query the database and get the entries for today. So I got a model Events with a date time field. Just to clarify, if I remove the date filter, it does return entries from the database. If I add them it does not. I double-checked that there is an item for today.
views.py
def dashboard(request):
if request.user.is_authenticated():
now = datetime.datetime.now()
events_today = Event.objects.filter(date__year=now.year, date__month=now.month, date__day=now.day)
return render_to_response("dashboard.html", {'today': events_today,}, RequestContext(request))
Update
It does work if I change the USE_TZ to False in settings.py. But it doesn't if it's True.
Update 2
I even uploaded the project to my VPS just in case it had something to do with my computer but still the same.

Instead of datetime.datetime.now() use timezone.now():
from django.utils import timezone
timezone.now()

I think you can try this query:
events_today = Event.objects.filter(date=datetime.datetime.today())

Django querying on range of days with timezone.now and __range broken?

I am running Django 1.4.3 and Python 2.7, with a PostgreSQL database (9.2.2). I have a model with a "last_view" field that is a timestamp of when a record is last viewed by a user. On my front page I want to display the ten most viewed items within the last week, so in my ListView I tried using this for my queryset:
startdate = timezone.now() - datetime.timedelta(days=7)
enddate = timezone.now()
urlpatterns = patterns('',
url(r'^$',
ListView.as_view(
queryset=Tag.objects.filter(last_view__range=([startdate, enddate])).order_by('-views')[:10],
context_object_name='most_viewed_list',
template_name='tags/index.html'),
name='index'),
This works when I first load the page. If I click any of the records and "view" them, the last_view attribute is updated in the database--but if I then reload the page, this item disappears from the "Recently Viewed" list (formed by the queryset described above).
I thought the problem was related to this post, where it seems like the "enddate" of timezone.now() is limited by when I start my server process. So when I click on a link after the server is running, the "current time" is in the future compared to "now()" and outside of the range (that is why the record I click disappears on a page reload). However, if I change things to just now as in the post mentioned above, I get an error on page load:
startdate = timezone.now - datetime.timedelta(days=7)
enddate = timezone.now
unsupported operand type(s) for -: 'function' and 'datetime.timedelta'
So I cannot create my startdate variable. I can get this to work by changing my queryset from _range to _gte, but it seems like that will break over time if now() is really timestamped to when the server process starts instead of "current time."
queryset=Tag.objects.filter(last_view__gte=(timezone.now() - datetime.timedelta(days=7)).order_by('-views')[:10]
The Django Tutorial on testing does show the use of now in making queries over dates, however they do not show how to subtract days from now or use it with timedelta or a date range...
Can someone please explain how to take a time difference from the actual, current time, i.e. using now instead of now()? I would also like to better understand the limitations of using now() versus now. I cannot find great documentation on this, since all examples I can find with timedelta() refer to timezone.now() or datetime.now(), which works (just not the way I want it to).
Thanks!

Subclass ListView and override the get_queryset method. By calculating the startdate and enddate inside the get_queryset method, timezone.now() will be the time when the request was made, not when the urls.py was initially loaded.
class TagListView(ListView):
def get_queryset(self):
startdate = timezone.now() - datetime.timedelta(days=7)
enddate = timezone.now()
return Tag.objects.filter(last_view__range=[startdate, enddate]).order_by('-views')[:10]
context_object_name='most_viewed_list'
template_name='tags/index.html'
urlpatterns = patterns('',
url(r'^$', TagListView.as_view(), name='index'),
)