マルイチニチ
Composed of
circle; entirety; whole; money; dough; enclosure inside a castle's walls; soft-shelled turtle
one day; all day (long); throughout the day; first day of the month
Composed of
bisected-circle seal
Sunday; day (of the month); counter for days; Japan
Examples (7 in total)
We spent the entire day in Yoyogi Park.
I spent the whole day cleaning up the room.
The computer repair took all day.