Date is not displayed on nft page

[denGitHub]

Trait date not displayed on the NFT page.

https://rinkeby.rarible.com/token/0x20d34e12657b2317be1ef1384d9d54cef087dcae:26?tab=details

Active since is empty.

This is how the trait is set on ipfs in metadata.json file

{"display_type":"date","trait_type":"Active Since","value":1607385600}

Though it works fine on opensea.

https://testnets.opensea.io/assets/0x20d34e12657b2317be1ef1384d9d54cef087dcae/26

Active Since Tuesday, December 8th, 2020

Could you please help to figure out how the date can be displayed on rarible as well?

[evgenynacu]

Thanks @denGitHub
Converting this into and issue