Date/Time Literals
Date and time literal values are:

A Date literal is enclosed in single quotation marks (' '). The format is
yyyy-mm-dd.

A Time literal is enclosed in single quotation marks (' '). The format is
hh:mm:ss.

A Timestamp is enclosed in single quotation marks (' '). The format is
yyyy-mm-dd hh:mm:ss.SSSSSS.