staying at Sofitel Hyland Nanjing rdand want to go to mass on 19 August could you tell me mass times

Moore Memorial Church is the nearest to your hotel, but I wonder whether it is suitable for you. They have masses at 14:00 and 19:00 in the afternoon. It is near the People's Square and you can take the subway line 2 to reach.
Or you can go to Xujiahui Cathedral, which is the biggest cathedral in Shanghai. They have masses at 12:00 Sundays. As for this cathedral, you may need to take the subway line 2 to reach Zhongshan Park Station and change to Yishan Road. Then you can take a taxi there.