Question:
How late during the weekdays in Elul can the Shofar be sounded? Shkia? Tzeit HaKochavim? All night? Thank you.
Answer:
If in shul, it was blown already by day. If it is done privately to practice one can be lenient and blow in a closed room.
Sources:
O:CH 581:3 Mishnah Berurah 24
