Is Tuesday named for a one-handed god?
1650s, "action of turning over," from the verbal phrase; see turn (v.) + over (adv.); meaning "kind of pastry tart" is attested from 1798. Meaning "number of employees leaving a place and being replaced" is recorded from 1955.
The eve of one's release from prison: He told me next Sunday was his turnover and I should meet him at the gate (1934+ Prison)