Past
The Past
noun
If you surpass the past then you're going backwards in time (at least if you're coming from the "present.") If this is the case, then you are definitely in the past.
かこ
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
玉ねぎが目にしみたことは過去に一度もありません。
My eyes have never watered from onions before.