This is an issue or bug that has occurred before.
In my team, there was a bug where some iPhone users were using the 12-hour format while others were using the 24-hour format when displaying dates.
I tried to help solve this issue, but in the Simulator, there was no option to switch the time format between 12-hour and 24-hour — it’s only available on a real iPhone device.
After some research, I discovered the solution changing the region settings, as each country uses different date and time formats.
Go to Simulator > Settings App > General > Language & Region > Region > Select the Region
Regions Using the 24-Hour Format
- Europe: Most European countries (e.g., France, Germany, Spain, Italy, Sweden, etc.).
- Asia: Many Asian countries (e.g., Japan, Indonesia, South Korea, etc.).