Getting Error while entering the date input in the Admin Database

Question

model.py

class Add_Timelog(models.Model):
    
    
    project=models.ManyToManyField(Project)
    client=models.ManyToManyField(Client)
    Job=models.ManyToManyField(Add_Job)
    Date = models.DateTimeField(max_length=100)
    Hours=models.TimeField(Date,null=True)
    
    def __str__(self):
        return str(self.Date)

Settings.py

DATE_INPUT_FORMATS = ('%Y-%m-%d')

While I entered the Date in the admin database it is showing as an undefined in the field and throwing an error as an "enter a valid date". I have changed the formats and entered the date manually in the Date field based on the format mentioned, but still throwing error.