I did some more digging and I think I have this one solved....

Most timers in NT say they are in milliseconds. So I assumed this timer
you want to set is in millisecond increments. The timer will 'tick' in
milliseconds versus like a normal wall clock that 'ticks' in seconds.

So.....

1 second = 1000 ticks

1 minute = 60,000 ticks

1 hour = 3,600,000 ticks

1 day = 86,400,000 ticks

4 days = 345,600,000 ticks

345600000 converted to hex = 0x14997000