TipperBit on Nostr: Based on block timestamps (which do not have to be accurate), the longest difference ...

Based on block timestamps (which do not have to be accurate), the longest difference between successive blocks is 463160 seconds (5 days, 8 hours, 39 minutes, 20 seconds) between blocks 0 and 1. The second longest is 90532 seconds (1 day 1 hour 8 minutes 52 seconds) between blocks 15323 and 15324.

source: https://bitcoin.stackexchange.com/questions/77783/shortest-and-longest-block-interval-time-ever-recorded-in-bitcoin