create a calculated date/time field
set the formula to new Date(119,8,6,23,0,0) which is Sept 6, 2019 at 11pm UTC
add the field to the issue view screen
navigate to any issue and look for the calculated field value
it will show the date+time as 06/Sep/19 11:00 PM (assuming you're using an English locale) instead of showing the date in your personal time zone as set on your profile. For example, in India, it should display 07/Sep/19 4:30 am
Note that this is only a display issue - date/times in Jira are stored in UTC anyway.