#!/usr/bin/env python
import random
import time
import datetime

def strTimeProp(format, prop):
    stime = time.mktime(time.strptime((datetime.datetime.now()+datetime.timedelta(-3650)).strftime(format), format))
    etime = time.mktime(time.strptime(datetime.datetime.now().strftime(format), format))
    ptime = stime + prop * (etime - stime)
    return time.strftime(format, time.localtime(ptime))

def randomDate(prop):
    return strTimeProp('%Y-%m-%dT%H:%M:%S', prop)

ms = ".%03dZ" % random.randint (0,999)
print randomDate(random.random()) + ms