CatalogManagement DateTime error

Hello everyone,

I am new in EpiServer. I use quicksilver and I faced interesting issue. I added Delivery Date property to my FashionVariant class.

I would like to show delivery date property on my product listing page. I also added metafield to according metaclass.

When I try edit some product details and also adding delivery date manually,by the end I got this exception at the below.

DateTime issue

Thanks in advance for any help.