Historically have Sundays/Mondays raised prices while Thur-Sat dropped it?

[Minsc]

I heard this.  I'd like statistical data to back it up.  I don't know how to get long term price data over months from MtGox.

[1715051358]

1715051358

[iprivately]

Ive noticed this also

[GlenBot]

I've verbally mentioned this to others as well; I've been thinking that the best time to buy is on Saturday nights, best time to sell is on Monday afternoons.  But I have no real hard data to back it up; it just seems to be a recurring pattern that I've noticed over the past couple months.

[nmat]

Programming a trading bot solely based on the day of the week would be awesome  

Here's a 6 months chart.

If you want raw data points look here under Historic Trade Data.

[grod]

You'll have the weekly high occuring most often on Tuesday and Wed. in the morning mountain time.   Secondary peaks occur in the evening on Sunday.

That's one cycle.  There are other cycles which overlay this, and either magnify or dampen the movements.

TL;DR - they do, except when they don't.