Speed up date diffs.
Speed up date diffs.

fw1121/nextflu,blab/nextflu,blab/nextflu,blab/stability,blab/stability,doerlbh/Indie-nextflu,blab/stability,doerlbh/Indie-nextflu,blab/nextflu,fw1121/nextflu,blab/nextflu,doerlbh/Indie-nextflu,blab/stability,fw1121/nextflu,blab/stability,fw1121/nextflu,blab/stability,blab/nextflu,doerlbh/Indie-nextflu