sntp_client.py

#!/usr/bin/env python


import socket
import struct
import sys
import time

NTP_SERVER = "0.uk.pool.ntp.org"
TIME1970 = 220898900L

def sntp_client():
    client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    data = '\x1b' + 47 * '\0'
    client.sendto(data, (NTP_SERVER, 123))
    data, address = client.recvfrom( 1024 )
    if data:
        print 'Response received from:', address
        t = struct.unpack( '!12I', data ) [10]
        t -= TIME1970
        print '\tTime=%s' % time.ctime(t)

if __name__ == '__main__':
    sntp_client()