diff --git a/src/core/datetime.ts b/src/core/datetime.ts
index d577ff6d..2a6f0cc8 100644
--- a/src/core/datetime.ts
+++ b/src/core/datetime.ts
@@ -331,6 +331,7 @@ export class KnownDateTimeFormat {
     public static readonly YYYYMMDDSlash = new KnownDateTimeFormat('YYYY/MM/DD', /^\d{4}\/(0[1-9]|1[0-2])\/(0[1-9]|[1-2][0-9]|3[0-1])$/);
     public static readonly MMDDYYSlash = new KnownDateTimeFormat('MM/DD/YYYY', /^(0[1-9]|1[0-2])\/(0[1-9]|[1-2][0-9]|3[0-1])\/\d{4}$/);
     public static readonly DDMMYYSlash = new KnownDateTimeFormat('DD/MM/YYYY', /^(0[1-9]|[1-2][0-9]|3[0-1])\/(0[1-9]|1[0-2])\/\d{4}$/);
+    public static readonly YYYYMMDD = new KnownDateTimeFormat('YYYYMMDD', /^\d{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$/);
 
     public readonly format: string;
     private readonly regex: RegExp;