You can set and adjust your event start and end times directly from the event creation or edit page using the time picker.
How to set event times
Go to the event creation page, or access the event details to edit an existing event.
Enter your start date and time.
Set an end time that occurs after the start time.
Save your changes.
Timezone settings
Make sure the time matches your intended timezone. You can verify your default timezone by going to Settings > Organization > Timezone.
You can override the timezone per event, by clicking the Timezone option below the event end date.
AM/PM or 24-hours setting
You can set the date- and time format (including AM/PM of 24-hours notation) in your account settings.