$BIGBILL comes at a fixed day each month, but $PAYCHECK happens on a different day every two weeks. Some months, $BIGBILL comes right after $PAYCHECK, in which case you&#x27;re safe. Other months, $BIGBILL comes right before $PAYCHECK which means you need to find some extra money to cover the period between the bill and your paycheck. If you&#x27;re living paycheck to paycheck, you always have to have these unsynchronized-cadences in the back of your mind.