Never mind, got it. Or, I got *some* approach; I have no clue if that is the most efficient. For what it's worth, if anyone ever needs that:
[code]_add_seconds(
current_date,
(
(
(
floor(
(
(
_...
[code]_add_seconds(
current_date,
(
(
(
floor(
(
(
_...