Problem converting some dates to epoch

[Gabriel_CCI]

Hi.

I have a problem with strptime
I try converter a date with

datee1=strptime('datee', "%d-%b-%y") but with some dates don´t work
example

datee                                   datee1

31-ago-16                      
13-feb-19                        1550026800.000000

When I overwrite  31-ago-16 with 13-fe-19  it works!
I don´t understand

My source is a Lookup file

[kamlesh_vaghela · Accepted solution]

@Gabriel_CCI 

Your data has invalid mon, ago is not valid month name in date 31-ago-16 , That's Y it is not working.

https://docs.splunk.com/Documentation/Splunk/8.2.1/SearchReference/Commontimeformatvariables