How to get correct GMT `last_modifed` of AWS S3 key using `boto` API?

Question

When using get_key and then fetching last_modified property, there is deviation of 3 hours.

k = b.get_key('av-bait/modules/reporters.py')
print k.last_modified

I get: 'Sat, 17 May 2014 18:42:02 GMT', while the file was updated at 21:42:02 as the following picture indicates:

File as shown in se console

Any idea how to fetch the gmt via s3?

Thanks

there is a time zone difference, GMT v GMT +300 – Padraic Cunningham May 17 '14 at 19:06 — Padraic Cunningham, May 17 '14 at 19:06
how do I retrieve the GMT +300 via s3 api? – omer bach May 17 '14 at 19:11 — omer bach, May 17 '14 at 19:11

score 1 · Answer 1 · answered May 17 '14 at 19:06

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Take a look at the timezone of your screenshot. The screenshot states the file was modified at 21:42:02 GMT+300 which equals 18:42:02 GMT so it's in fact the same timestamp and you only need to do some timezone magic to convert it.

answered May 17 '14 at 19:06

Knut

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how do I retrieve the GMT +300 via s3 api? – omer bach May 17 '14 at 19:24
You can't. This should be a normal `datetime.datetime` object so I suggest for example to follow [this post](http://stackoverflow.com/questions/4770297/python-convert-utc-datetime-string-to-local-datetime). – Knut May 17 '14 at 19:29

score 1 · Answer 2 · answered May 17 '14 at 19:08

1

The solution is very simple - the timestamp is correct.

Mind the +03:00:00 at the timestamp on web. If you apply it to the time you see before, you will get exactly the timestamp you get by asking last_modified

answered May 17 '14 at 19:08

Jan Vlcinsky

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how do I retrieve the GMT +300 via s3 api? – – omer bach May 17 '14 at 19:27
@omerbach I guess, you are talking about `boto`, and that provides `last_modified` in UTC (GMT). You have to convert it to another timezone using Python, if you need. – Jan Vlcinsky May 17 '14 at 20:44

score 1 · Accepted Answer · edited May 05 '15 at 13:44

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If you want to adjust the string by three hours you can use:

>>> t='Sat, 17 May 2014 18:42:02 GMT'
>>> from datetime import datetime
>>> str_time= datetime.strptime(t,'%a, %d  %B %Y %H:%M:%S GMT')
>>> updated_time= str_time.replace(hour=str_time.hour+3)
>>> print updated_time
2014-05-17 21:42:02

There are many ways to do it, have a look at the datetime docs,

edited May 05 '15 at 13:44

jonatan

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answered May 17 '14 at 20:07

Padraic Cunningham

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FWIW, the correct date format for the default S3 `last_modified` is: `%a, %d %b %Y %H:%M:%S GMT` – 0xack13 Oct 22 '18 at 07:10

How to get correct GMT `last_modifed` of AWS S3 key using `boto` API?

3 Answers3