How to change the time format on Linux?

Question

CentOS

The hosting is CentOS 6. In the Node.js application, the time is displayed in a 12-hour format, but it needs to be in a 24-hour format. How to change it?

Answer 1

All figured out.
First I registered the command,
then I rewrote it from the list
LANG=ru_RU.utf8

Answer 2

Question for your application. Applications format the output themselves.