build-overrides.sh [1] resolved default date as yesterday for the nightly build. However, the first day of month is not handled correctly, resulting into dates like:
"20190300", given "today" is 2019-03-01

[1] https://github.com/jboss-container-images/jboss-kie-modules/blob/master/tools/build-overrides/build-overrides.sh