Node.js fs.utimes() Method Last Updated : 08 Oct, 2021 Comments Improve Suggest changes Like Article Like Report The fs.utimes() method is used to asynchronously change the modification and access timestamps of a file. The timestamps can be specified using a number, string, or Date object. An error would be thrown if the timestamp cannot be converted to a proper number, or is NaN, Infinity or -Infinity. Syntax: fs.utimes( path, atime, mtime, callback ) Parameters: This method accepts four parameters as mentioned above and described below: path: It is a string that denotes the path of the file whose timestamps have to be changed. atime: It is number, string or Date object that denotes the new access timestamp to be set. mtime: It is number, string or Date object that denotes the new modification timestamp to be set. callback: It is a function that would be called when the method is executed. err: It is an error that would be thrown if the method fails. Below examples illustrate the fs.utimes() method in Node.js: Example 1: javascript // Node.js program to demonstrate the // fs.utimes() method // Import the filesystem module const fs = require('fs'); console.log("Details before changing time:"); // Get the stats object of the file prevStats = fs.statSync("example_file.txt"); // Access the modified and access time of the file console.log("Modification Time:", prevStats.mtime); console.log("Access Time:", prevStats.atime); // Get the current time to change the timestamps let newModifiedTime = new Date(); let newAccessTime = new Date(); // Use the utimes() function to assign // the new timestamps fs.utimes( "example_file.txt", newAccessTime, newModifiedTime, () => { // Get the stats object of the file console.log("\nDetails after changing time:"); // Get the stats object of the file changedStats = fs.statSync("example_file.txt"); // Access the changed modified and // access time of the file console.log("Changed Modification Time:", changedStats.mtime); console.log("Changed Access Time:", changedStats.atime); } ); Output: Details before changing time: Modification Time: 2017-01-24T23:41:00.000Z Access Time: 2018-02-26T00:05:00.000Z Details after changing time: Changed Modification Time: 2020-05-25T15:31:08.257Z Changed Access Time: 2020-05-25T15:31:08.257Z Example 2: javascript // Node.js program to demonstrate the // fs.utimes() method // Import the filesystem module const fs = require('fs'); console.log("Details before changing time:"); // Get the stats object of the file prevStats = fs.statSync("example_file.txt"); // Access the modified and access time of the file console.log("Modification Time:", prevStats.mtime); console.log("Access Time:", prevStats.atime); // Get the current time to change the timestamps let newModifiedTime = new Date("January 25, 2017 05:11:00"); let newAccessTime = new Date("February 26, 2018 05:35:00"); // Use the utimes() function to assign // the new timestamps fs.utimes("example_file.txt", newAccessTime, newModifiedTime, () => { // Get the stats object of the file console.log("\nDetails after changing time:"); // Get the stats object of the file changedStats = fs.statSync("example_file.txt"); // Access the changed modified and // access time of the file console.log("Changed Modification Time:", changedStats.mtime); console.log("Changed Access Time:", changedStats.atime); }); Output: Details before changing time: Modification Time: 2015-12-20T19:42:00.000Z Access Time: 2020-05-25T15:19:24.250Z Details after changing time: Changed Modification Time: 2017-01-24T23:41:00.000Z Changed Access Time: 2018-02-26T00:05:00.000Z Reference: https://nodejs.org/api/fs.html#fs_fs_utimes_path_atime_mtime_callback Comment More infoAdvertise with us S sayantanm19 Follow Improve Article Tags : Web Technologies Node.js Node.js-fs-module Similar Reads Node JS fs.readFile() Method ​In Node.js, the fs.readFile() method is a fundamental tool for reading files asynchronously, allowing your application to remain responsive while accessing file data. 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