I stand up (fundamental vascular decompression)
I walk away (mental decompression)
I leave work (attitudinal decompression)
I drive home (cylinder compressions)
listening to music (audio decompression)
watching TV (visual impressions)
waking up (diurnal recompression)
driving to work (schedule recompression)
in meetings (sudden pressures)
when I'm taking a shower (fluid compression)
lying drunk in a field (inhibition compression)
I'm doing something else
Results (920 votes), past polls
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
Results (168 votes),