You can customize this by changing the "Start of the day" and "End of the day" settings under General Settings. By setting the time range that you frequently schedule events, you can make your calendar easier to view. Please give it a try.
If you want to revert to the previous settings, you can restore them by changing the following settings:
- General Settings → "Start of the day" to "0:00"
- General Settings → "End of the day" to "0:00"