in reply to Re^3: Epoch to specific output
in thread Epoch to specific output

Or just use shift:
perl -MPOSIX -le 'print strftime("%m%d%H%M", gmtime shift)' "$x"
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ