convert string date to numeric

I have a date I obtain from a cert:

Apr 13 2022

That I need to convert to a numeric so I can compare to the current date+60 and find all the will expire in 60 days or less
[<=]

[this is SuSe 10.1 so unfortunately, convdate is not available]

You don't mention a specific (script) language, here's a way using the date command:

date --date="Apr 13 2022" '+%Y%m%d'

$ date --date="Apr 13 2022" '+%Y%m%d'
20220413

Are you working at the scripting level?

lorentz/phil /home/phil 1148> date -d 'apr 13 2022'
Wed Apr 13 00:00:00 EDT 2022
lorentz/phil /home/phil 1149>

Are you working at the C/C++ level?

man 3 getdate

sorry

bash

that works. thanks