Versions of Iowa Code > Chapter 1D - Iowa Standard Time on LawServer 2023 Iowa Code > Chapter 1D – Iowa Standard Time 2022 Iowa Code > Chapter 1D – Iowa Standard Time 2020 Iowa Code > Chapter 1D – Iowa Standard Time 2018 Iowa Code > Chapter 1D – Iowa Standard Time 2016 Iowa Code > Chapter 1D – Iowa Standard Time 2014 Iowa Code > Chapter 1D – Iowa standard time 2009 Iowa Code Chapter 1D – Iowa standard time