English service (mass) at St Joseph's Cathedral, Hanoi, Vietnam

In St Joseph's Cathedral, Hanoi, Vietnam, we saw this sign.

More Information From
https://en.wikipedia.org/wiki/St._Joseph's_Cathedral,_Hanoi
Travel information
For hotels
booking.com
Comparison site:
https://www.clicktripz.com/rates/search/index
For airlines
travelok.com
vietJetair.com (Comprehensive list of budget airlines in Wikivoyage.)
For transport
https://www.grab.com/vn/en/

Language
Duolingo.com 
(Remember to click on the sound symbol to hear how words are pronounced.) 

Author
Angela Lansbury, travel writer and photographer.

Please share links to your favourite posts. I have several more on Hanoi, Halong Bay and Vietnam.