So, if your input file was slightly different, you might not get your desired results with a 'plain' awk. See below where there is a single space between the month and a number:
> cat file66c.tsv
13 Oct 1 Joe smile
18 Jan 2 Linda laugh
11 Nov 3 Vets march
> cat file66c.tsv | tr "\t" "~" | cut -d"~" -f2
Oct 1
Jan 2
Nov 3
> cat file66c.tsv | awk '{print $2}'
Oct
Jan
Nov
Using awk in that way isn't going to work for the task, it's going to assume space is the seperator and if column 1 has more than 1 word etc it will get the wrong information.
Thanks, the tr and cut command seems to be doing the trick. I did notice a few results missed the correct entry but this may be due to bad formating in the tsv file?