If the power is lost, the device goes offline in about a millisecond. There would not be time to write anything to flash. If you want persistent time, get an external RTC and a battery, just like you would on a computer. Instead of trying to keep time through watchdog failures, fix what is blocking...

Hello everyone i am a bit new to ESP32, and i need your help about an issue i am facing i am using <ESP32Time.h> library to use 24h clock to make schedual timer the real current time will be set manually by user interface through LCD. the project won't be connected to wifi internet connection for no...