The effective date is a date that
applies to per diem rates. It is important because it shows the first date
that CONUS or
OCONUS
per diem rates is valid. When a pilot or flight
attendant uses EZPERDIEM.COM Per Diem Calculator
TM, the
effective date, the expiration date, the
seasonal start date, and the
seasonal
end date are all checked against the date of each layover that gets entered.
The per diem rate tables are not
always standardized, so EZPERDIEM.COM uses a complicated algorithm designed to extract
that data straight from the government provided per diem tables.