Red flag window 42 days 7/20 to 8/31

I'm flagging from Saturday July 20th (first day of Tishabav 3 week mourning period) to August 31st (last day of Islamic year 1440)

From and including: Saturday, July 20, 2019
To, but not including Saturday, August 31, 2019
Result: 42 days
Or 1 month, 11 days
6 weeks
1008 hours
11.51% of 2019