If they still move time back in spring, they will gain 1h per person.
If they keep doing it indefinitely, they're looking at some serious profits and boost to GDP.
This is Cuba we're talking about. Profits only matter if they go to the ruling family and friends.
Haha I know a skit from 1990, where the comedian makes this exact point.
He even takes it a step further:
“Why settle for turning back time just one hour? Think about how much we f*cked up the world in the past 30 years! Let’s turn time back 30 years and fix that mess!”