First win of the day
'First win of the day' is an award that can be achieved once per day which gives you 1200 bonus XP at the end of the match.
The timer for this resets at 1:00 AM PST (2:00 AM PDT). If you have achieved the 'First win of the day' already, and you are playing a game that starts at 12:45 AM PST, if you win the match and it ends at 1:01 AM PST, then you will get the achievement again.
If you start on a winning team but auto-balance puts you on the losing team, and then your team loses at the end, you will still get the 'First win of the day'.