Sort by date feature doesn't work

[adieyal]

https://search.opengazettes.org.za/search?q=eskom&offset=0&sort=oldest
https://search.opengazettes.org.za/search?q=eskom&offset=0&sort=newest

both give the same, unsorted result

[longhotsummer]

I've noted this in our pivotal task around dates, it's definitely not doing what it advertises on the tin.