hi,
I have START.DATE in format YYYYMMDD and the value is 20150930
In ENQ I set conversion to : JULIAN then OCONV D.E and I got 30.09.2015. That's correct.
For LIST ... EVAL "OCONV(ICONV(START.DATE, 'DJ'), 'D.E')"

My problem:
I have DATE.TIME in format YYMMDDHHMM

for exmple: 1509301230 -> I'd like to get 30.09.2015 12:30

1. How to define conversion in ENQ to get DD.MM.LLLL HH:MM ?
2. How to define conversion in LIST command to get DD.MM.LLLL HH:MM ?

thx..

For ENQUIRY easiest is to write a small routine that converts O.DATA the way you want it, e.g.
O.DATA = TRIM(O.DATA)
IF O.DATA THEN
DATE.YY = O.DATA[1,2]
DATE.MM = O.DATA[3,2]
DATE.DD = O.DATA[5, 2]
TIME.HH = O.DATA[7,2]
TIME.MM = O.DATA[9,2]
O.DATA = DATE.DD:".":DATE.MM:".20":DATE.YY:" ":TIME.HH:":":TIME.MM
END

The same can be used in EVAL (routine using parameter instead of O.DATA) or a complex EVAL :
EVAL"DATE.TIME[5,2]:'.':DATE.TIME[3,2]:'.20':DATE.TIME[1,2]:' ':DATE.TIME[7,2]:':':DATE.TIME[9,2]"

Alternatively define a USR.FIELD.NAME as TYPE = "I" in STANDARD.SELECTION with USR.FIELD.NO like the EVAL statement and use this in ENQUIRY and LIST.

Go to the DATE.TIME field in the enquiry and
In the TYPE field put D. I think this alone is enough to display the Date and Time properly in their respective formats.