They are single time use, last 48 hours, and don't apply to bundles.
I will add this to my toolbox to further map out my inner world.
Global Day number 09 Global Day brings us the last of the single digit numbers, and the end of this particular day cycle.
The first is that whatever you don't drop today will be baggage throughout the next day cycle, and there's no point in carrying an unnecessary load.
I have sent a ticket about this issue to the support section and will be waiting for their official response.
As long as they log into the game on seven different days anytime in those two weeks, Genshin Impact players will still be able to collect all the prizes.