newproposal does not select the correct session name on the start day
Reported by @muzelle
denolf@lindenolf:/data/visitor/in1127/bm05$ ls
20220615 20220617 20220708 20220823 20221003 20220616 20220706 20220726 20220907
newproposal
selects 20220823
instead of 20220907
when executed on 7 Sept 2022.