Please screenshot,
as @txnelson pointed out, you have to convert it to a proper continuous time value to work with it.
The display format is not important, it is only how the internally stored datetime is displayed.
But it is essential how the given string is interpreted, in your case you need to specify the appropriate informat, see screenshot and table script.
In that case I copied the column, because after conversion the original string is lost. In my case I had also to switch to JMP locales under preferences, Window specific, to see the proper datetime format (I have german windows system).
New Table( "time_sort",
Add Rows( 5 ),
New Column( "Proc Time",
Character,
"Nominal",
Set Values(
{"1/12/2021 11:44:32 AM", "1/12/2021 11:44:32 AM",
"1/12/2021 11:44:32 AM", "1/12/2021 11:44:32 AM",
"1/12/2021 11:44:32 AM"}
),
Set Display Width( 177 )
),
New Column( "copy_date",
Numeric,
"Continuous",
Format( "Locale Date Time h:m:s", 23, 0 ),
Input Format( "m/d/y h:m:s", 0 ),
Set Selected,
Set Values( [3693296672, 3693296672, 3693296672, 3693296672, 3693296672] ),
Set Display Width( 183 )
)
)
Georg