diff --git a/src/grist/service.ts b/src/grist/service.ts
index 3f3d5c1..00b8945 100644
--- a/src/grist/service.ts
+++ b/src/grist/service.ts
@@ -39,11 +39,11 @@ export class GristService extends BaseService<GristClient> {
 	private getTodayAsId() {
 		const now = DateTime.now().setZone("Europe/Berlin");
 		const start = DateTime.fromObject(
-			{ year: now.year, month: 0, day: 0, hour: 0, minute: 0 },
+			{ year: now.year, month: 1, day: 1, hour: 0, minute: 0 },
 			{ zone: "Europe/Berlin" },
 		);
-		const diff = start.diff(now).toMillis();
-		return Math.floor(diff / 86400000);
+		const diff = now.diff(start).toMillis();
+		return Math.ceil(diff / 86400000);
 	}
 
 	private transformToPersonalGoals(