Supply drops should randomize their location every hour. So that way you’ve got a very high chance to encounter the all the various supply drops on the map. Epic strike tower way out range…next hour it’s within distance of your house.
Perhaps every hour is a bit too often, but I’ve noticed mine haven’t changed all week. I live within 7 drops, not one green in seven days. I call shenanigans.
I’d be happy with a 6-hourly rotation of drops. Would give two opportunities at each strike tower (even the 12 hour ones).