The reset periods per region are documented at the bottom of the page and shows "First reset: 16:30 - 17:00 ET" for the Asia region. That is in line with your experience of ~15:45CT. While they don't say why that time has been selected, it makes sort of sense for traders in Asia who trade in Asia.
You say you have the computer and TWS running in the "US Central" time zone, but what region have you selected for TWS? At the bottom of the TWS login window is a "More Options" button that, among other fields, allows the selection of the TWS region as America, Europe, Asia, and China. Unless you have selected America already, maybe you could try selecting region "America" to hopefully prevent resets during the US trading hours. If that does not work, maybe IBKR can configure your account for American reset hours.
cdc1.ibllc.com? is the server for US Central as you can see from and so.
闯ü谤驳别苍
On Fri, Aug 27, 2021 at 08:11 PM, Kevin wrote:
The purple grid occurs (for me, anyway), when TWS loses the Primary server. For me this is cdc1.ibllc.com, Every day at 15:45 or 15:46 US Central time, which is 06:45 the next morning Sydney time at this time of year..
I live in Sydney and the account is with IB Australia. The computer and TWS are set to US Central time. I suspect that this particular server (cdc1.ibllc.com) is reset at this time on a daily basis. Still haven't figured out why the reset happens when US market is still open.
KH
