The date format is in YYMMDD.
The expiry date of the promotion gold voucher can be seen gold voucher code itself. This is an example code: 1234-1234-1234-180131-1234-1234-1234 . The bold part in the code indicate the expiry date.
"Since early morning the heavy snow has been falling down the sky and all villages are now covered with a white blanket. The village shaman says that this weather will persist till the first day of Spring. Don’t forget to dress properly your hero and troops with warm clothing, it will be cold out there!"
We have activated the winter backgrounds in the game and they will be there till 20.03.2018! Not a fan of cold snowy winter? No worries, you will be able to deactivate the style in the game options!