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time and datetime modules producing different result

Why gmt and utc results are different when running following code.
import time
import datetime
print( time.mktime(time.gmtime()))
print(datetime.datetime.utcnow().strftime("%s"))
Output:
1571984607.0
1571981007
I read many articles gmt and utc both will give same result. Why I am getting different result here.
gmt is 1 hour advance in time module when I converted it to IST.

Python date comparison with string output/format

I'm currently trying to writing a script to automate a function at work, but I'm not intimately familiar with Python. I'm trying to take a XML dump and compare a specific entry's date to see if the time has passed or not.
The date is in a particular format, given:
<3-letter Month> <DD> <HH:MM:SS> <YYYY> <3-letter Timezone>
For example:
May 14 20:11:20 2014 GMT
I've parsed out a string in that raw form, and need to somehow compare it with the current time to find out if the time has passed or not. That said, I'm having a bit of trouble figuring out how I should go about either formatting my text, or choosing the right mask/time format in Python.
I've been messing around with different variations of the same basic format:
if(trimmed < time.strftime("%x") ):
Trimmed is the clean date/time string. Time is derived from import time.
Is there a simple way to fix this or will I have to dig into converting the format etc.? I know the above attempt is simplistic, but I'm still very new to Python. Thanks for your time and patience!

You should use combination of gmtime (for GMT time),mktime and datetime.
from time import gmtime,mktime
from datetime import datetime
s = "May 14 20:11:20 2014 GMT"
f = "%b %d %H:%M:%S %Y GMT"
dt = datetime.strptime(s, f)
gmt = datetime.fromtimestamp(mktime(gmtime()))
if dt<gmt:
print(dt)
else:
print(gmt)

Today's and tomorrow's date in YYYY-MM-DD format in PST timezone in python

I need to get the date for today and tomorrow in YYYY-MM-DD format in python in PST timezone. The datetime() returns date in UTC. I have an internal JIRA system which uses PST date setting and i want to query that. The code will run in a restricted environment where i can't install any external python modules like the pytz library. I tried in a lot of ways but am unsuccessful.
Is there anyway it can be done in python?

There is confusion about the timezone for datetime.date.today(), http://docs.python.org/2/library/datetime.html It gives local time. Right now it is the 20th in Greenwich, Google:
1:55 AM
Thursday, March 20, 2014 (GMT)
Time in Greenwich, London, UK
In Colorado today() gives the 19th:
>>> import datetime
>>> str(datetime.date.today())
'2014-03-19'
>>> str(datetime.date.today() + datetime.timedelta(1))
'2014-03-20'
>>>

Seems like you can use timedelta for converting UTC to PST and todays date to tomorrows date:
from datetime import datetime, timedelta
print datetime.utcnow() - timedelta(hours=8) //convert to PST
print datetime.utcnow() + timedelta(days=1) //get tomorrow
For ‘YYYY-MM-DD’ format, there is a date.isoformat() method in python docs

I used the below code to get today's date and tomorrow's date in PST.
from datetime import datetime, timedelta
from pytz import timezone
import pytz
/*Timezone aware object*/
utc_now = pytz.utc.localize(datetime.utcnow())
pst_now = utc_now.astimezone(pytz.timezone("America/Los_Angeles"))
file_dt=pst_now.strftime("%Y-%m-%d")
print(file_dt)
curr_time=datetime.utcnow().astimezone(pytz.timezone("America/Los_Angeles")
tom_time=utc_now+datetime.timedelta(days=1)
today=curr_time.strftime("%Y-%m-%d")
tomorrow=tom_time.strftime("%Y-%m-%d")
print("Today is "+today+" and Tomorrow is "+tomorrow)

Get a timezone aware datetime with the system timezone in Python

How can I get a datetime object that is timezone aware and is in system's timezone?
What I'm trying to do is to get unix time of the 23:59 of the current day.
For example, if I do
int(time.mktime(
datetime.datetime.now(pytz.timezone("Europe/Moscow"))
.replace(hour=23, minute=59, second=59)
.timetuple()
))
I get 1314305999; but when I do $ date -d '#1314305999' in console, I get Fri Aug 26 00:59:59 MSD 2011, which is 1 hour off (DST, perhaps), even though I have Europe/Moscow in /etc/timezone (and the same problem arises if I use such timestamp in PostgreSQL).
And specifying a precise timezone is not really preferable.

Using python datetime.datetime.strptime on windows with BST timezone

I need to parse many different dates in many different formats. I am having trouble with the following and wondered if anyopne could explain why;
The following works on a linux system:
from datetime import datetime
datetime.strptime('Tue 23 Aug 2011 09:00:07 PM BST','%a %d %b %Y %H:%M:%S %p %Z')
But running under windows it raises
ValueError: time data does not match format
However, if I try GMT not BST on windows, it works fine;
from datetime import datetime
datetime.strptime('Tue 23 Aug 2011 09:00:07 PM GMT','%a %d %b %Y %H:%M:%S %p %Z')
Is there a reason python does not understand the BST timezone under windows, but it works fine under Linux?
thanks,
Matt.

In my opinion, parsing a three-letter time zone code like this is not a good practice (unless of course you have no choice). For example, "EST" is commonly used in the USA for UTC-4/5 and is also commonly used in Australia. So any support for "EST" must therefore be dependent on locale. It would not surprise me if "BST" was similarly ambiguous.
I highly recommend using the pytz module in which British civil time is given the string identifier Europe/London and UTC is called Etc/UTC. The pytz API will give consistent results regardless of the locale of the user or system running the application.
If you are working on a UI that must be tied to locale, or parsing inputs with formats you cannot change, then consider using a dictionary of abbreviations to pytz timezone objects. For example: {'BST': 'Europe/London'}. Then your application can work with UTC dates and times uniformly, which will greatly reduce the possibility of errors.