I see. It’s a bit complicated and would be out of our scope of support.
Someone shared this code:
wp_add_inline_script(
'wp-date',
implode(
"\n",
array(
'var localDateSettings = wp.date.__experimentalGetSettings();',
'localDateSettings.formats.datetimeAbbreviated = "M j, Y g:i a T";',
'wp.date.setSettings(localDateSettings);',
)
),
'after'
);
Adding PHP: https://docs.generatepress.com/article/adding-php/#code-snippets
You can then try adding this to your date Format: Y/m/d g:i a T
Not sure if it would work. It might be good to reach out to a developer regarding this.