Before you start, make sure you have the "stndrd.olb" and"calendar.pll" file.
DATE_LOV.GET_DATE
(NVL(:BLOCK.ITEM, SYSDATE),
'BLOCK.ITEM',
200, 100,
'SELECT DATE',
'OK','CANCEL',
TRUE, FALSE, FALSE);
ate_lov.get_date (initial date,
return block.item,
window x position,
window y position,
window title,
ok button label,
cancel button label,
highlight weekend days,
autoconfirm selection,
autoskip after selection);
fmb source : https://drive.google.com/file/d/1p-F1AgR_AWbGLatUA7N-Egbzg2lRb8Rx/view