3 Days of Darkness?

Last night from 10-something PM to 4-something AM, my only light sources were the Moon and my Alarm Clock. I wondered if the 3 Days of Darkness prophecy (https://bit.ly/3DaysOfDarkness) might be coming true. Nonetheless, it was a great reminder of how handy flashlights and especially CASH will be if we are hit with a solar flare or an ElectroMagnetic Pulse Attack. Bitcoin, shmitcoin! And what good will the keyfob to enter my apartment building do me if there is no power?