d=`date +%d`
m=`date +%m`
y=`date +%Y`

awk ' BEGIN { 
split("31,28,31,30,31,30,31,31,30,31,30,31",dm,",")
d='$d'
m='$m'
y='$y'

d1=d-1
m1=m
y1=y
if(d1==0)
{
	m1--
	if (m1==0)
	{
		y1--
		m1=12
	}
	d1=dm[m1]
}

d2=d+1
m2=m
y2=y
if(d2>dm[m2])
{
	m2++
	if (m2==13)
	{
		y2++
		m2=1
	}
	d2=1
}

printf "%.2d/%.2d/%d ",d1,m1,y1
printf "%.2d/%.2d/%d\n" ,d2,m2,y2
} '

