Previous Close Line on Weekly Charts.

Hello, Jeff!

Thank's for your feedback.

I love the chart feature that puts a line(grey, in this case) at the previous close. I discovered this feature just this week. I've been using it on my weekly charts and it's been great. However, I woke up this morning to see that the previous close line on all my charts is no longer accurate(shown below). I went to the hourly charts and found that the previous close line on all of my weekly charts corresponds to the close price of 8/23/2017 16:00 on the hourly charts for each pair. I'm using Oanda demo(regular, not v20).

Previous close line is calculated by Session time. 

For example:

AUD/CAD (1 hour Chart) 

Session: 16:00 - 15:59 (UTC-06:00)

You can compare data on the watchlist with the charts on the different aggregations. 

As you can see Previous close price are the same.

Also, I've noticed that the dates for each candle on the weekly charts are marked for the Friday of the previous week, rather than the Sunday of the current week. Is this intentional?

Yes, it is intentional. 

http://developer.oanda.com/rest-live/rates/#getInstrumentList

I've never used Oanda's platforms before so I never knew that they start the week at end-of-day on Fridays. That's very interesting. Thanks for digging!

Keep up the good work!