ATtiny85 and supercapacitor

I tested a small 1.5 F capacitor together with ATtiny85 microcontroller. It is manufactured by Panasonic and operates at a maximum voltage of 5.5 V. The capacitor is designed for back-up of low-energy devices. I used the ATtiny85 microcontroller at 1 MHz to comply with the condition of the low-power device. Do you want to know how long the microcontroller worked?”