last night; yesterday evening
yesterday evening; last night
previous year (fiscal, academic, etc.)
autumn of last year; fall of last year
two days before yesterday; three days back (ago)
last summer; summer of last year
two years before last (year); three years back (ago)
last spring; the spring of last year
last season (e.g. in sports); equivalent season last year
complete reversal of values or ways of thinking
complete reversal of values or ways of thinking (over time); What appeared wrong in the past now appears right; realizing and regretting the past errors of one's ways