xxx
times|time
-----|-----
1st|4.17 18:30-21:30
2nd|4.19 18:30-21:30
correction
xxx
times|time
-----|-----
1st|4.17 18:30-21:30
2nd|4.19 18:30-21:30
xxx
times|time
-----|-----
1st|4.17 18:30-21:30
2nd|4.19 18:30-21:30
correction
xxx
times|time
-----|-----
1st|4.17 18:30-21:30
2nd|4.19 18:30-21:30