The California ISO has posted to its website an updated version of the 2020 payments calendar. The updated ISO Payments Calendar 2020 is available on its website at http://www.caiso.com/market/Pages/Settlements/Default.aspx under the Market and administrative charges heading.
The updates, highlighted in yellow in the posted document, includes corrected T+12B bill period for Weekly Invoice publish on Jan. 15, 2020.