Circuit Magazines are produced quarterly. Articles are always welcome and may be sent to the Editors at any time during the year....see "Contact Us" for the email address. However, there are "deadline" dates for a particular Quarter:-

For the September to November magazine the DEADLINE is mid July.

For the December to February magazine the DEADLINE is mid October.

For the March to May magazine the DEADLINE is mid January.

For the June to August magazine the DEADLINE is mid April