Fix improper timezone offsets

components/apps/Browser/directoryIndex.ts

@@ -1,6 +1,6 @@
 import { basename } from "path";
 import extensions from "components/system/Files/FileEntry/extensions";
-import { getExtension } from "utils/functions";
+import { getExtension, getTZOffsetISOString } from "utils/functions";
 import { ROOT_NAME } from "utils/constants";
 
 export type DirectoryEntries = {
@@ -90,7 +90,12 @@ const formatSize = (size?: number): string => {
 };
 
 const formatDate = (date?: Date): string =>
-  date?.toISOString().replace("T", " ").split(".")[0].slice(0, -3) || "";
+  date
+    ? getTZOffsetISOString(date.getTime())
+        .replace("T", " ")
+        .split(".")[0]
+        .slice(0, -3)
+    : "";
 
 export const createDirectoryIndex = (
   url: string,

components/apps/Terminal/useCommandInterpreter.ts

@@ -410,7 +410,10 @@ const useCommandInterpreter = (
                     const mDate = new Date(
                       getModifiedTime(filePath, fileStats)
                     );
-                    const date = mDate.toISOString().slice(0, 10);
+                    const date = getTZOffsetISOString(mDate.getTime()).slice(
+                      0,
+                      10
+                    );
                     const time = timeFormatter.format(mDate).padStart(8, "0");
                     const isDirectory = fileStats.isDirectory();
 

components/system/Files/FileEntry/functions.ts

@@ -52,6 +52,7 @@ import {
   getGifJs,
   getHtmlToImage,
   getMimeType,
+  getTZOffsetISOString,
   isSafari,
   isYouTubeUrl,
   resizeImage,
@@ -894,7 +895,7 @@ export const getDateModified = (
   format: Intl.DateTimeFormatOptions
 ): string => {
   const modifiedTime = getModifiedTime(path, fullStats);
-  const date = new Date(modifiedTime).toISOString().slice(0, 10);
+  const date = getTZOffsetISOString(modifiedTime).slice(0, 10);
   const time = new Intl.DateTimeFormat(DEFAULT_LOCALE, format).format(
     modifiedTime
   );

scripts/minifyHtml.js

@@ -45,7 +45,9 @@ const getCommitHash = () => {
   if (!commit) {
     commit =
       process.env.npm_package_gitHead?.slice(0, COMMIT_HASH_LENGTH - 1) ||
-      new Date().toISOString().slice(0, 10);
+      new Date(Date.now() - new Date().getTimezoneOffset() * 60000)
+        .toISOString()
+        .slice(0, 10);
   }
 
   return commit;

scripts/robots.js

@@ -32,7 +32,9 @@ const buildFileSitemap = (path, excludePaths, callback) => {
       xmlUrls.push(
         callback(
           `${author.url}/?url=${encodedUrlEntryPath}`,
-          stats.mtime.toISOString().substring(0, 10),
+          new Date(stats.mtime - date.getTimezoneOffset() * 60000)
+            .toISOString()
+            .substring(0, 10),
           `${author.url}/${encodedUrlEntryPath}`
         )
       );

utils/functions.ts

@@ -794,12 +794,23 @@ export const getFormattedSize = (size = 0, asKB = false): string => {
   return `${size} bytes`;
 };
 
-export const getTZOffsetISOString = (): string => {
-  const date = new Date();
+let timezoneOffset: number;
 
-  return new Date(
-    date.getTime() - date.getTimezoneOffset() * 60000
-  ).toISOString();
+export const getTZOffsetISOString = (timestamp?: number): string => {
+  let time = timestamp;
+  // eslint-disable-next-line no-undef-init
+  let date: Date | undefined = undefined;
+
+  if (!time) {
+    date = new Date();
+    time = date.getTime();
+  }
+
+  if (typeof timezoneOffset !== "number") {
+    timezoneOffset = (date || new Date()).getTimezoneOffset() * 60000;
+  }
+
+  return new Date(time - timezoneOffset).toISOString();
 };
 
 export const LOCAL_HOST = new Set(["127.0.0.1", "localhost"]);