I suspect it's more your 24 hours. You receive Eucharist at 8 in the morning, then again 12 hours later, then you better wait a full 12 hours your personal time before receiving again, no matter how many time zones you cross! Or that's how I would feel obliged to interpret it for my personal doings.
One is permitted to receive the Eucharist at, say, a Saturday morning Mass, then receive again at the anticipated Sunday Mass on Saturday evening.
Or, one is permitted to receive at the Saturday Vigil Mass, then receive again on Sunday.
One may receive at different Masses on the same day or the same Mass (such as the Sunday Mass) on different days.
One may also, for instance, receive the Eucharist at a daily Mass, then receive again at a wedding Mass the same day.
So Catholics on the ISS can't have an hourly communion mass? >:*3