207a208,210
> # Account for hardware clock vs UTC mismatch
> hw_offset=$(( $(date -d "$(sudo hwclock)" +%s) - $(date +%s) ))
> 
209c212
< echo $(( $wake_time - $offset * 60 )) > /sys/class/rtc/rtc0/wakealarm; 
---
> echo $(( wake_time - offset*60 + hw_offset )) > /sys/class/rtc/rtc0/wakealarm