In most international systems, 122813 would be ambiguous. However, in Japanese file naming conventions, this usually follows the pattern (Month-Day-Year).
Keep if your file size exceeds 2 GB. Delete if under 1.5 GB and seek a better encode. Carib-122813-509.mkv
Videos from Caribbeancom are distinct within the Japanese industry for being "uncensored" (or featuring very light digital mosaic censorship) compared to most mainstream Japanese adult videos that are strictly regulated by ethical committees. Technical Details of MKV Files Since this file is an MKV, it likely features: High Definition (HD) In most international systems, 122813 would be ambiguous