Django DateTimeField default not affecting Time

I am following an online tutorial on Django.

Below is my Models script:

from django.db import models
from datetime import datetime

class Tutorial(models.Model):
    tutorial_title = models.CharField(max_length=200)
    tutorial_content = models.TextField()
    tutorial_published = models.DateTimeField('date published', default=datetime.now)

    def __str__(self):
        return self.tutorial_title

and here is my admin script:

from django.contrib import admin
from .models import Tutorial

# Register your models here.

class TutorialAdmin(admin.ModelAdmin):
    fieldsets = [
        ("Title/date",{"fields":["tutorial_title","tutorial_published"]}),
        ("Content", {"fields":['tutorial_content']})
    ]

admin.site.register(Tutorial, TutorialAdmin)

My issue is that DateTimeField(default=) is just not working. I am absolutely unable to change the default time in tutorial published. No matter what I put in default, nothing changes. It's always 16:39:02. This isn't a time zone difference. I have no clue what is causing this. Any help would be greatly appreciated.