In order to show the date in the manor you want you have 2 options. 1 in Joomla, 1 in the module.

First, when you setup a custom field, type calendar (date) you can choose the option to 'show time'. If done, the date is shown like

2022-01-01 12:00:00

if not, the date is shown like

2022-01-01

Furthermore you can set the date in the user-details tab, to do the same, but here you can do more than just that, you can use PHP date-time formatting.

F j, Y, g:i a                 // March 10, 2001, 5:16 pm
m.d.y                         // 03.10.01
j, n, Y                       // 10, 3, 2001
Ymd                           // 20010310
h-i-s, j-m-y, it is w Day     // 05-16-18, 10-03-01, 1631 1618 6 Satpm01
\i\t \i\s \t\h\e jS \d\a\y.   // it is the 10th day.
D M j G:i:s T Y               // Sat Mar 10 17:16:18 MST 2001
H:m:s \m \i\s\ \m\o\n\t\h'    // 17:03:18 m is month
H:i:s"                        // 17:16:18
Y-m-d H:i:s                   // 2001-03-10 17:16:18 (the MySQL DATETIME format)