call it a day (verb)

1. After hours of drawing and animating, the tired artist decided to call it a day and rest.

2. The couple enjoyed a lovely day at the beach and when the sun began to set, they decided to call it a day and head home.

3. The team of scientists worked tirelessly to develop the ground-breaking technology, but after encountering numerous setbacks, they had to call it a day and accept that they were defeated.

4. The soldiers fought bravely in the battle for freedom, and when victory was finally achieved, they decided to call it a day and celebrate their triumph.