Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Raspberry Pi/RP2040/RTC/SETUP_1#0x0
RTC setup register 1
Seconds
Minutes
Hours
Day of the week: 1-Monday…0-Sunday ISO 8601 mod 7
Copyright © 2020 Raspberry Pi (Trading) Ltd.
SPDX-License-Identifier: BSD-3-Clause
https://github.com/cmsis-svd/cmsis-svd-data