Loading end time based on chosen start time in Time period

Hi,
Light box has start_time and end_time combo boxes. They both contain times starting from 00:00 to 23:55. Depending on what time is chosen for the start time, i want times equal to it and less than it to be removed from the end_time combo box. How to achieve this? I need your assistance.

Thanks and Regards,
Karthick K.

The only way - write your own “time” section for lightbox, you can check in sources/lightbox.js how existing section works, and based on it create a custom one.