At Titan FX, Cryptocurrency CFD trading hours are 5 days a week from Monday to Friday, excluding 2 minutes of rollover (23: 59-0: 01), until 23:55 on Friday.
For more details, right-click on the MT4/MT5 Market watch window and check the "Specifications".
You can check the link for the details https://titanfx.com/ja/trade-crypto