Settings related with your time zone has been changed. It is simple to update your time zone:
Profile/Modify Profile/Forum Profile/Time Zone (at bottom)
This can be from help to understand each others when mentioning time. In case that you can't find Modify Profile button in your profile, that means you are a new user and you need more posts in order to edit profile (this doesn't apply for members who registered after this topic was posted, new members have to fill the box when registering on the forum).
You can see which time zone is yours here:
Note: Since there were some changes with time, from country to country, this map might not be correct with your time zone, so what I want to say here is changing twice time each year is complication and soon most or all countries will probably keep one time all the time. Now from what I've read it was left to every individual country to decide.