Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb0/STM32WB07/WAKEUP/BLUE_WAKEUP_TIME#0x0
BLUE_WAKEUP_TIME register
programmed wakeup time for the IP_BLE.
https://github.com/modm-io/cmsis-svd-stm32