before / past / prior-to

Several ways to sign this concept depending on the meaning you want to convey.

BEFORE-(past)
This version means:
"In the past."
"Previous to now"
"Last" as in "last-night"
"Ever" as in "Have you ever...?"
"Once upon a time..."

Animation: BEFORE or PAST (previous, "last" as in "last Monday" which means "previous Monday."

BEFORE-(prior to)
This version is means "prior to," "happened earlier than," and "previous to an event."
NOTE: The left hand isn't moving. The right hand is moving back toward the body. Both hands are slightly bent at the knuckles.

BEFORE-(prior to)

Here is another version. This version means:
"Prior to"
"Happened earlier than"
"Previous to an event"

NOTE: The left hand isn't moving. The right hand is moving back toward the body.