Filename Logic Update

[shah-smit]

If it is last working day, then cut of 2030hrs.

also we dont want to calculate if last business day or not every day as such, lets use env variable to store,

isLastWorkingDayToday={false,true} date_last_calculated=31102020

if does not exist, then calculate if date_last_calculated is not today, then calculate else use the {false,true} to determine further.

[shah-smit]

https://robm.me.uk/ruby/2014/01/25/pstore.html

may help with sotring data rather using env var.

[shah-smit]

https://stackoverflow.com/questions/15208890/get-the-day-of-the-last-friday-of-each-month