EXFO FTB-500 - Manual (Page 103)

Setting Up Your FTB-500
FTB-500 95
Setting Date and Time Formats
3. Under Clock, Language, and Region, tap Change date, time, or
number formats.
4. Refine the settings according to your needs.
5. Tap Apply to confirm, and then OK to close the window.
The new values are taken into account immediately.