Is NTP blocked on your network? Have you no access to a GPS? Does your computer complain about SSL certs? Then you might just need a quick and dirty time setting script.

set_date.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

'''\
Instructions:
Make this script Executable::

    chmod +x set_date.py


Place this script in /opt::

    cp set_date.py /opt/

To set this script to run every 5 minutes as a cron job as root::

    crontab -e

Then add the following line::

    */5 * * * * /opt/set_date.py
'''

import sys
from subprocess import call


PY2 = sys.version_info[0] == 2
if PY2:
    from urllib2 import urlopen
else:
    from urllib.request import urlopen

def set_date(time):
    command = ['date', '--set', time]
    call(command)


def get_date(url='http://google.com'):
    resp = urlopen(url)
    return resp.headers['date']

if __name__ == '__main__':
    set_date(get_date())