How to convert Unix timestamp to Datetime in Bash

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    #!/bin/bash

    # Unix timestamp representing seconds since the Unix epoch
    unix_timestamp=714764890
    
    # Convert Unix timestamp to Date
    date -d @"$unix_timestamp"

Output:

1992-08-25 17:48:10

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

Code Explanation

In this Bash example, '714764890' is the Unix timestamp for '1992-08-25 17:48:10'. The date -d command with @"$unix_timestamp" converts the Unix timestamp to a human-readable date. The @ tells the date command to interpret the number as a Unix timestamp.
The result is displayed in a format like 'Mon Jan 1 00:00:00 UTC 2018'.

Convert Date to Unix timestamp in Bash

Other useful Bash date functions

Option	Description	Example
`-d`	Parses the provided string as a date.	`date -d "2018-07-15 12:30:45"` returns Sun Jul 15 12:30:45 UTC 2018
`+%s`	Outputs the Unix timestamp (seconds since 1970-01-01).	`date -d "2018-07-15 12:30:45" +%s` returns 1531656645
`-u`	Uses UTC (Coordinated Universal Time) for the output.	`date -u` returns the current UTC time.
`+%Y-%m-%d`	Formats the date as year-month-day.	`date +%Y-%m-%d` returns 2024-08-28
`+%H:%M:%S`	Formats the time as hours:minutes:seconds.	`date +%H:%M:%S` returns 12:34:56
`+%F`	Formats the date as `YYYY-MM-DD` (ISO format).	`date +%F` returns 2024-08-28
`+%T`	Formats the time as `HH:MM:SS`.	`date +%T` returns 12:34:56
`@timestamp`	Interprets the given timestamp as a Unix timestamp.	`date -d @1514764800` returns Mon Jan 1 00:00:00 UTC 2018

Current Unix Timestamp SECONDS SINCE JAN 01 1970

Current UTC Time

2025-08-20