Time Series nodes missing in the Repository

I have read about the Time Series nodes for Lag Column and Missing Values, but theyu are not listed in the KNIME 2.12 node Repository. Where are they?

Those nodes are part of the standard KNIME Analytics Platform software package which can be downloaded from our website. The nodes are contained under Data Manipulation / Columns within the Node Repository or can be found while using the Search Box.

I'm using the the KNIME Analytics Platform 3.2.2 but can't find the Node Time Series Missing Values. Was it removed?

Yes, it was removed. Its functionality is now covered by the standard missing value node.