The --until flag does not seem to work

Thank you very much for this script.

I ran the script a few days to gather data about bitcoin but this doesn't yield any results.
The query i use is:

`python3 Exporter.py --querysearch "bitcoin" --since 2016-03-31 --until 2016-4-1 `

When i remove the `--until` flag it works perfectly but it starts to gather data from today on (if i could reverse this i could stop the script by hand if i got the data i wanted but it starts today and works its way down)

Is there anything i'm missing or is it a bug?

Cheers

Edit:

I saw a lot of closed issues about this problem, any idea if it's a periodic problem?