user4308: I would like to know how to calculate the slot time for a particular date(e.g. 1/1/2023).

user6086: This depends on the slot length which can be changed. You can't be certain about a slot number for sometime that is a long time in the future.
If you assume you know the slot config then you can use
https://github.com/input-output-hk/plutus-apps/blob/d637b1916522e4ec20b719487a8a2e066937aceb/plutus-ledger/src/Ledger/TimeSlot.hs#L130

4308: <p>I would like to know how to calculate the slot time for a particular date(e.g. 1/1/2023).</p>
 6086: <p>This depends on the slot length which can be changed. You can't be certain about a slot number for sometime that is a long time in the future.</p>
<p>If you assume you know the slot config then you can use
<a href="https://github.com/input-output-hk/plutus-apps/blob/d637b1916522e4ec20b719487a8a2e066937aceb/plutus-ledger/src/Ledger/TimeSlot.hs#L130" rel="nofollow noreferrer">https://github.com/input-output-hk/plutus-apps/blob/d637b1916522e4ec20b719487a8a2e066937aceb/plutus-ledger/src/Ledger/TimeSlot.hs#L130</a></p>
