CSV epoc to Human Readable Date

sample.csv 
apple,red,1494005258000
banana,yellow,1494005306000
lemon,green,1494005640000

Unix Command

grep -Eo '[0-9]{13}' ~/sample.csv | xargs -L1 date -r

Output

Tue Feb 21 04:33:20 PST 49313

Tue Feb 21 17:53:20 PST 49313
Sat Feb 25 14:40:00 PST 49313