PST: Saturday, December 30, 2017 4:00 PM – Sunday, December 31, 2017 3:59 PM EST: Saturday, December 30, 2017 7:00 PM – Sunday, December 31, 2017 6:59 PM CET: Sunday, December 31, 2017 1:00 AM – Monday, January 1, 2018 12:59 AM AEDT: Sunday, December 31, 2017 11:00 AM – Monday, January 1, 2018 10:59 AM Join us on Sunday (UTC) for some special perks! All day long, you can enjoy the following benefits: Double the chance to receive a Nova Box from monsters. Receive double the amount of Nova Coins from the Nova Box. Receive Grade S Winter Photo Card (once per account). Make sure to log in and take advantage of these perks! View on the Official Site