diff --git a/UI/AllThemesGui.ts b/UI/AllThemesGui.ts
index 0419b1489..ceb1fa33b 100644
--- a/UI/AllThemesGui.ts
+++ b/UI/AllThemesGui.ts
@@ -1,17 +1,19 @@
 import {FixedUiElement} from "./Base/FixedUiElement";
-import State from "../State";
 import Combine from "./Base/Combine";
 import MoreScreen from "./BigComponents/MoreScreen";
 import Translations from "./i18n/Translations";
 import Constants from "../Models/Constants";
 import UserRelatedState from "../Logic/State/UserRelatedState";
+import {Utils} from "../Utils";
 
 export default class AllThemesGui {
     constructor() {
         new FixedUiElement("").AttachTo("centermessage")
        const state = new UserRelatedState(undefined);
         new Combine([new MoreScreen(state, true),
-            Translations.t.general.aboutMapcomplete.SetClass("link-underline"),
+            Translations.t.general.aboutMapcomplete
+                .Subs({"osmcha_link": Utils.OsmChaLinkFor(7)})
+                .SetClass("link-underline"),
             new FixedUiElement("v" + Constants.vNumber)
         ]).SetClass("block m-5 lg:w-3/4 lg:ml-40")
             .SetStyle("pointer-events: all;")
diff --git a/UI/BigComponents/Attribution.ts b/UI/BigComponents/Attribution.ts
index 471556798..1bcdcbc9e 100644
--- a/UI/BigComponents/Attribution.ts
+++ b/UI/BigComponents/Attribution.ts
@@ -8,6 +8,7 @@ import Loc from "../../Models/Loc";
 import {VariableUiElement} from "../Base/VariableUIElement";
 import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig";
 import {BBox} from "../../Logic/BBox";
+import {Utils} from "../../Utils";
 
 /**
  * The bottom right attribution panel in the leaflet map
@@ -23,11 +24,7 @@ export default class Attribution extends Combine {
         const reportBug = new Link(Svg.bug_ui().SetClass("small-image"), "https://github.com/pietervdvn/MapComplete/issues", true);
 
         const layoutId = layoutToUse?.id;
-        const now = new Date()
-        // Note: getMonth is zero-index, we want 1-index but with one substracted, so it checks out!
-        const startDate = now.getFullYear() + "-" + now.getMonth() + "-" + now.getDate()
-        const osmChaLink = `https://osmcha.org/?filters=%7B%22comment%22%3A%5B%7B%22label%22%3A%22%23${layoutId}%22%2C%22value%22%3A%22%23${layoutId}%22%7D%5D%2C%22date__gte%22%3A%5B%7B%22label%22%3A%22${startDate}%22%2C%22value%22%3A%222020-07-05%22%7D%5D%2C%22editor%22%3A%5B%7B%22label%22%3A%22MapComplete%22%2C%22value%22%3A%22MapComplete%22%7D%5D%7D`
-        const stats = new Link(Svg.statistics_ui().SetClass("small-image"), osmChaLink, true)
+        const stats = new Link(Svg.statistics_ui().SetClass("small-image"), Utils.OsmChaLinkFor(31, layoutId), true)
 
 
         const idLink = location.map(location => `https://www.openstreetmap.org/edit?editor=id#map=${location?.zoom ?? 0}/${location?.lat ?? 0}/${location?.lon ?? 0}`)
diff --git a/UI/BigComponents/FullWelcomePaneWithTabs.ts b/UI/BigComponents/FullWelcomePaneWithTabs.ts
index b4b3c3f69..3f6a8bf4d 100644
--- a/UI/BigComponents/FullWelcomePaneWithTabs.ts
+++ b/UI/BigComponents/FullWelcomePaneWithTabs.ts
@@ -79,15 +79,11 @@ export default class FullWelcomePaneWithTabs extends ScrollableFullScreen {
         const tabs = FullWelcomePaneWithTabs.ConstructBaseTabs(state, isShown)
         const tabsWithAboutMc = [...FullWelcomePaneWithTabs.ConstructBaseTabs(state, isShown)]
 
-        const now = new Date()
-        const lastWeek = new Date(now.getDate() - 7 * 24 * 60 * 60 * 1000)
-        const date = lastWeek.getFullYear() + "-" + Utils.TwoDigits(lastWeek.getMonth() + 1) + "-" + Utils.TwoDigits(lastWeek.getDate())
-        const osmcha_link = `https://osmcha.org/?filters=%7B%22date__gte%22%3A%5B%7B%22label%22%3A%22${date}%22%2C%22value%22%3A%222021-01-01%22%7D%5D%2C%22editor%22%3A%5B%7B%22label%22%3A%22mapcomplete%22%2C%22value%22%3A%22mapcomplete%22%7D%5D%7D`
-
+       
         tabsWithAboutMc.push({
                 header: Svg.help,
                 content: new Combine([Translations.t.general.aboutMapcomplete.Clone()
-                    .Subs({"osmcha_link": osmcha_link}), "<br/>Version " + Constants.vNumber])
+                    .Subs({"osmcha_link": Utils.OsmChaLinkFor(7)}), "<br/>Version " + Constants.vNumber])
                     .SetClass("link-underline")
             }
         );
diff --git a/Utils.ts b/Utils.ts
index 51aaf072b..c3e8349f4 100644
--- a/Utils.ts
+++ b/Utils.ts
@@ -481,5 +481,16 @@ export class Utils {
         }, false);
 
     }
+    
+    public static OsmChaLinkFor(daysInThePast, theme = undefined) : string {
+        const now = new Date()
+        const lastWeek = new Date(now.getTime() - daysInThePast * 24 * 60 * 60 * 1000)
+        const date = lastWeek.getFullYear() + "-" + Utils.TwoDigits(lastWeek.getMonth() + 1) + "-" + Utils.TwoDigits(lastWeek.getDate())
+        let osmcha_link = `{"date__gte":[{"label":"${date}","value":"${date}"}],"editor":[{"label":"mapcomplete","value":"mapcomplete"}]}`
+        if(theme !== undefined){
+            osmcha_link = osmcha_link + "," + `{"comment":[{"label":"#${theme}","value":"#${theme}"}]`
+        }
+        return  "https://osmcha.org/?filters="+ encodeURIComponent(osmcha_link)
+    }
 }