product-date-time.liquid

          {%- assign product_date = product.metafields.my_fields.datetime -%}
          
          {%- comment -%}
         	 Color Metafield and attributes
          {%- endcomment -%}
          
          {%- if product_date -%}
          
          <p>Pre-order: {{ product_date.value | time_tag: format: 'date' }}</p>
          
          {%- endif -%}