expiration date for imported users

I had to import a large list of members with expiration dates. The plans are annual and run from July 1 - July 1

My CBSubs plan is set up
"This Calendar Year"
Start Date 07-01
Renewal starts at expiration date or payment date, whichever happens last

What expiration date/time should I set all the current memberships for
I though 06-30-2015 but it seems like if they renew today, (their expiration is 6/30) that it only renews for 2015, and should be new expiration of 2016.

Please help!

Believe for by calendar year subscriptions the expiration date should be the day before the start date just before midnight. So you should use the below expiration date.

2015-06-30 23:59:59

The system puts in 2015-07-01 03:59:59 (when you subscribe on front end as a user) I think you said it was a bug in the server timezone offset, so i've set them all to that. It seems to work except it shows the expiration as 7/1 instead of 6/30.

I don't want to go back and change them all again so i think this is good for now. Maybe not ideal, but until I upgrade it will have to do.

Whatever frontend generates is ideally what you'd use for your imports too, but if it's working ok then you might be fine.