> Full Neon documentation index: https://neon.com/docs/llms.txt

# PostgreSQL Date Functions

The following page shows the most commonly used PostgreSQL date functions that allow you to effectively manipulate date and time values.

## Section 1. Getting the current date and time

This section shows you various functions for getting the current date, current date and time, current timestamp, without or without timezone.

- [CURRENT_DATE](https://neon.com/postgresql/postgresql-date-functions/postgresql-current_date) – Return the current date.
- [CURRENT_TIME](https://neon.com/postgresql/postgresql-date-functions/postgresql-current_time) – Return the current time without date parts.
- [CURRENT_TIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-current_timestamp) – Return the current date and time with the time zone at which the current transaction starts.
- [CLOCK_TIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-clock_timestamp) – Return the current timestamp which changes during statement execution.
- [STATEMENT_TIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-statement_timestamp) – Return the current timestamp and time of the current statement.
- [NOW](https://neon.com/postgresql/postgresql-date-functions/postgresql-now) – Return the date and time with the time zone at which the current transaction starts.
- [TRANSACTION_TIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-current_timestamp) – Same as the [CURRENT_TIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-current_timestamp) or [NOW()](https://neon.com/postgresql/postgresql-date-functions/postgresql-now) function.
- [LOCALTIME](https://neon.com/postgresql/postgresql-date-functions/postgresql-localtime) – Return the time at which the current transaction starts.
- [LOCALTIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-localtimestamp) – Return the date and time at which the current transaction starts.

## Section 2. Extracting date and time components

This section provides you with functions for extracting date and time components

- [DATE_PART](https://neon.com/postgresql/postgresql-date-functions/postgresql-date_part) – Get a field of a timestamp or an interval e.g., year, month, day, etc.
- [EXTRACT](https://neon.com/postgresql/postgresql-date-functions/postgresql-extract) – Same as [DATE_PART()](https://neon.com/postgresql/postgresql-date-functions/postgresql-date_part) function.

## Section 3. Converting to date and time

This section introduces the functions that convert a string to a date and timestamp.

- [TO_DATE](https://neon.com/postgresql/postgresql-date-functions/postgresql-to_date) – Convert a string to a date.
- [TO_TIMESTAMP](https://neon.com/postgresql/postgresql-date-functions/postgresql-to_timestamp) – Convert a string to a timestamp.
- [MAKE_DATE](https://neon.com/postgresql/postgresql-date-functions/postgresql-make_date) – Create a date from year, month, and day.
- [MAKE_TIME](https://neon.com/postgresql/postgresql-date-functions/postgresql-make_time) – Create a time from hour, minute, and second.

## Section 4. Handling intervals

This section covers the function that handles intervals such as calculating age based on intervals and justifying intervals for enhanced readability.

- [AGE](https://neon.com/postgresql/postgresql-date-functions/postgresql-age) – Calculate the age and return an interval.
- [JUSTIFY_DAYS](https://neon.com/postgresql/postgresql-date-functions/postgresql-justify_days) – Adjust 30-day intervals as months.
- [JUSTIFY_HOURS](https://neon.com/postgresql/postgresql-date-functions/postgresql-justify_hours) – Adjust 24-hour intervals as days
- [JUSTIFY_INTERVAL](https://neon.com/postgresql/postgresql-date-functions/postgresql-justify_interval) – Adjust interval using justify_days and justify_hours functions, with additional sign adjustments.
- [MAKE_INTERVAL](https://neon.com/postgresql/postgresql-date-functions/postgresql-make_interval) – Create an interval from the provided interval's components.

## Section 5. Operators

This section shows you how to use the date and time operators.

- [AT TIME ZONE](https://neon.com/postgresql/postgresql-date-functions/postgresql-at-time-zone) – Convert a timestamp or a timestamp with time zone to a different time zone.

## Section 6. Utility functions

This section shows you various date and time utility functions.

- [DATE_TRUNC](https://neon.com/postgresql/postgresql-date-functions/postgresql-date_trunc) – Truncate a date.
- [ISFINITE](https://neon.com/postgresql/postgresql-date-functions/postgresql-isfinite) – Check if a date, a timestamp, or an interval is finite or not (not +/-infinity).
- [TIMEOFDAY](https://neon.com/postgresql/postgresql-date-functions/postgresql-timeofday) – Return the current date and time, like clock_timestamp, as a text string).
- [PG_SLEEP](https://neon.com/postgresql/postgresql-date-functions/postgresql-pg_sleep) – Pause the execution of a statement for some seconds.