How to convert Unix timestamp to Datetime in Racket

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    #lang racket

    ; Convert Unix timestamp to Date
    (define unix-timestamp 1524818363) 
    (define date (seconds->date unix-timestamp))
    
    ; Format and display the date
    (printf "Converted Date: ~a-~a-~a ~a:~a:~a\n"
            (date-year date)
            (date-month date)
            (date-day date)
            (date-hour date)
            (date-minute date)
            (date-second date))

Output:

Converted Date: 2015-02-24 22:52:43

Example only. There may be multiple ways to perform this operation.

Code Explanation

In this example, the Unix timestamp 1524818363 is converted into a date structure using the seconds->date function. The date structure contains fields like year, month, day, hour, minute, and second, which are accessed using functions like date-year, date-month, and others.
The result, 2018-04-27 08:39:23, is printed using printf.

Convert Date to Unix timestamp in Racket

Other useful Racket date functions

Function	Description	Example
`seconds->date`	Converts a Unix timestamp to a `date` structure.	`(seconds->date 1514764800)` returns 2018-01-01 00:00:00
`date->seconds`	Converts a `date` structure to a Unix timestamp.	`(date->seconds (date 2018 7 15 12 30 45 0 0 0))` returns 1531656645
`current-seconds`	Returns the current Unix timestamp.	`(current-seconds)` returns the current Unix timestamp.
`date`	Creates a `date` structure with the given year, month, day, hour, minute, second, etc.	`(date 2018 7 15 12 30 45 0 0 0)` creates the date 2018-07-15 12:30:45
`date-year`	Extracts the year from a `date` structure.	`(date-year (seconds->date 1514764800))` returns 2018
`date-month`	Extracts the month from a `date` structure.	`(date-month (seconds->date 1514764800))` returns 1 (January)
`date-day`	Extracts the day of the month from a `date` structure.	`(date-day (seconds->date 1514764800))` returns 1
`date-hour`	Extracts the hour from a `date` structure.	`(date-hour (seconds->date 1514764800))` returns 0
`date-minute`	Extracts the minute from a `date` structure.	`(date-minute (seconds->date 1514764800))` returns 0
`date-second`	Extracts the second from a `date` structure.	`(date-second (seconds->date 1514764800))` returns 0

Current Unix Timestamp SECONDS SINCE JAN 01 1970

Current UTC Time

2025-08-20