Find out if a date is more than 30 days old

you need to do something on similar lines:

from datetime import datetime, timedelta
time_between_insertion = datetime.now() - insertion_date

if  time_between_insertion.days>30:
    print "The insertion date is older than 30 days"

else:
    print "The insertion date is not older than 30 days"

from datetime import datetime, timedelta

print(datetime.now())
datetime.datetime(2017, 9, 5, 7, 25, 37, 836117)

print(datetime.now() - timedelta(days=30))
datetime.datetime(2017, 8, 6, 7, 25, 51, 723674)

As you can see here, it is accurate down to seconds.

The problem is in datetime.today(). You should use datetime.now() instead of datetime.today():

time_since_insertion = datetime.now() - insertion_date

if time_since_insertion.days > 30:
   print("The insertion date is older than 30 days")
else:
  print("The insertion date is not older than 30 days")

Hope it helps!