Increase email reminder period to once per day

src/lib/strings/time.ts

@@ -61,3 +61,10 @@ export function getAge(birthDate: Date): number {
   }
   return age
 }
+
+export function toSimpleDateString(date: Date) {
+  const mm = date.getMonth() + 1 // 0-indexed
+  const dd = date.getDate()
+  const yyyy = date.getFullYear()
+  return `${yyyy}-${mm}-${dd}`
+}