There are 52 weeks in a year, so twice a week (biweekly) would
be twice that number, or 104 times.
I think you get paid 26 times when you get paid bi-weekly.
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It is bi-monthly. Like the rest of the Federal Government, the
Department of Defense issues paychecks on the 1st and 15th of every
month. This may shift a day or two in regards to federal holidays
and Sunday's.