diff --git a/packages/bolt-connection/src/packstream/packstream-utc.js b/packages/bolt-connection/src/packstream/packstream-utc.js
index ba202ce3d..bd29b6a9a 100644
--- a/packages/bolt-connection/src/packstream/packstream-utc.js
+++ b/packages/bolt-connection/src/packstream/packstream-utc.js
@@ -279,6 +279,8 @@ export function packDateTime (value, packer) {
         currentValue.value.toUpperCase() === 'B'
           ? year => year.subtract(1).negate() // 1BC equals to year 0 in astronomical year numbering
           : year => year
+    } else if (currentValue.type === 'hour') {
+       obj.hour = int(currentValue.value).modulo(24)
     } else if (currentValue.type !== 'literal') {
        obj[currentValue.type] = int(currentValue.value)
      }