It's in the invoice expiration time, depends on the wallet of the person you are zapping
nostr:npub1t0nyg64g5vwprva52wlcmt7fkdr07v5dr7s35raq9g0xgc0k4xcsedjgqv nostr:npub1u8lnhlw5usp3t9vmpz60ejpyt649z33hu82wc2hpv6m5xdqmuxhs46turz - Why do my zap confirmations on Mutiny have such different expiration times? Some are 23hrs and others 3hrs even though they were zapped at the same time. 
Discussion
Ahh ok that’s interesting, thanks 🤙
The default for nostr:npub1getal6ykt05fsz5nqu4uld09nfj3y3qxmv8crys4aeut53unfvlqr80nfm is 86400 seconds, which is 24 hours.
