about 22 fortnights
There are 26 fortnights in a year.
17 years is 443.51 fortnights.
About 104.36 fortnights in four years.
26 fortnights plus one day
2 years = 52.1494708995 fortnights.
4 years = 104.2989417989 fortnights.
There are 182 fortnights in seven years.
Two years is about 52.2 fortnights.
130 fortnights in 5 years.
There a 35 in 5 fortnights 7x5= 35
its really 423 fortnights = 42 days