AllowedDateStyles returns the list of allowed date styles.

DateToJulianDay is based on the date2j function in PostgreSQL 10.5.

DefaultDateStyle returns the default datestyle for Postgres.

MakeCompatibleDateFromDisk creates a Date from the number of days since the Unix epoch.

MakeDateFromPGEpoch creates a Date from the number of days since 2000-01-01.

MakeDateFromPGEpochClampFinite creates a Date from the number of days since 2000-01-01, clamping to LowDate or HighDate if outside those bounds.

MakeDateFromTime creates a Date from the specified time.

MakeDateFromUnixEpoch creates a Date from the number of days since the Unix epoch.

ParseDate converts a string into Date.

ParseDateStyle parses a given DateStyle, modifying the existingDateStyle as appropriate.

ParseTime converts a string into a time value on the epoch day.

ParseTimestamp converts a string into a timestamp.

ParseTimestampWithoutTimezone converts a string into a timestamp, stripping away any timezone information.

ParseTimeWithoutTimezone converts a string into a time value on the epoch day, dropping any timezone information.

HighDate is the highest non-infinite Date.

LowDate is the lowest non-infinite Date.

NegInfDate is the negative infinity date.

PosInfDate is the positive infinity Date.

These are sentinel values for handling special values: https://www.postgresql.org/docs/10/static/datatype-datetime.html#DATATYPE-DATETIME-SPECIAL-TABLE.

TimeInfinity represents the "highest" possible time.

TimeNegativeInfinity represents the "lowest" possible time.

Date is a postgres-compatible date implementation.