12:00 AM / 24:00 bug and 24-hour clock

For example event A lasts from 18.00-24.00 so together six hours. The AI first translates event duration to 6.00PM- 0.00AM, which is correct.

But when uploaded to Google Calendar, it shows that A duration is 0.00-18.00 or 0.00AM-6.00PM so totaling 18 hours which not correct. Tha AI doesn’t seem to understand AM and PM that well.

HOWEVER, when I manually input duration as 18.00-24.00 it works corretly. Changing clock system to 24-hour system seems to fix this bug. Can you fix this bug this way or another way? Thanks you so much!