This is the first one today where the timer didn't start at 240 minutes, earlier it was 240 minutes and swapped between heart and eye. I know eye was alternating because I farmed it before I went to work earlier this afternoon.
Wanted to add that yeah, I think the current timer was just set so it didn't swap again before the day ends, since 7 hours from now is when the week resets.
Aww screw it I have no idea what to believe anymore, I feel like my eyes were playing tricks on me.
Everyone just enjoy the hearts and eyes while you can!