Get all logins since 2pm pacific time based on internal saved time of central.

gistfile1.py

import datetime

# Time is Central!
d = datetime.datetime(2012, 9, 26, 14, 00)

# So we can convert our times to Pacific time
dt = datetime.timedelta(hours=2)

from django.contrib.auth.models import User

# Users who have logged in since that time
ut = User.objects.filter(last_login__gte=d).order_by('last_login').values_list('username', 'last_login')

for u, t in ut:
    t = (t-td).isoformat()
    t = t[t.find('T') + 1:]
    t = t[:t.find('.')]
    print t, u1