Do you remember one of the most infamous Genshin banners which came during the second half of 2.6, when an Ayaka rerun lasted for FORTY TWO days or what about the SHORTEST Genshin Banner occurring during 1.3 when Keqing was given her ONLY banner for THIRTEEN days? While these two set the record for the longest and shortest banners in Genshin’s history, it made me curious: which Genshin banner can claim to have lasted for the most AVERAGE amount of time? So I got to work and found that throughout the entirety of Genshin’s history, banners would last on average 21 days, (20.67741935 and so on, to be specific) which means there are only TWO pairs of banners which lasted the most AVERAGE amount of time and they are: the Phase 1 banners of 2.7, lasting from the 31st May 2022 to the 21st June, 2022 AND the Phase TWO banners of 4.2, lasting from the 29th November 2023 to the 20th December 2023, making these banners the most MID in Genshin’s history!