Hi everyone and happy thanksgiving!

Its probably simple stuff but I'm having some difficulties so some help would be appreciated a lot! So im writing my thesis this semester and need some help with specifiying date and year in a panel data and first, I want to make a xline in a graph with a scatter setting. Been trying to use excels "jan2010", "feb2010", "mar2020" etc but been having difficulties with specifying to stata since it doesn't understand the code and just replies invalied argument.

Thus I wounder is there any year and date variable that works with in stata so I can specify it in an graph with the command scatter?

Secondly, Im using a Difference-in-Difference method in my thesis and as might expected I've been running into some problems using "jan2010" etc since stata, once again doesn't really understand what I mean.

As an conclusion, I guess these question is just a single question about if there are any alternative way to make year-month specification work smoothly. Been reading some of the manuals by Stata but haven't been able to plug them in smoothly into the do.file.

Sincerly,

Kevin