Modify date for .dat file

[zillah]

Dear folk

I need to modify date on this attached .dat file belong to a software called Line Sweep Tool in the link below :

Code:

https://www.anritsu.com/en-au/test-measurement/products/lst

Is there a way to modify date ? Yes I know if I convert it to .jpg can be done but I need to modify on .dat file,,,,please see snapshot below

Code:

https://imgur.com/a/0xeL2lN

Thx