I’ll call it a day around 3:00.
→  3시쯤일을끝내야겠어.

[예문]
A: No. I was tossing and turning all night.
 응. 밤새 이리 뒤척이고 저리 뒤척이고 했어.

B: You should go home early today.
 오늘 일찍 퇴근해야겠다.

A That’s a good idea. I’ll call it a day around 3:00.
  그거 괜찮은 생각이네. 3시 쯤에 일을 끝내야겠네.

B You’ll feel better tomorrow with a good night’s sleep tonight.
  오늘 밤 푹 자고 나면 내일은 나아질 거야.