Historical clue formulations

• Nav. rank — 2026-08-09
• Cincinnati trio? — 2026-04-14
• Tennis duo? — 2025-12-06
• Nav. rank — 2025-08-25
• Minnesotan trio? — 2025-01-29
• Tennis center? — 2024-11-03
• Nav. rank — 2024-09-29
• Kennedy center? — 2024-03-30
• Nav. rank — 2023-11-08
• Many a "Star Trek" officer: Abbr. — 2022-11-28
• Coast Guard rank: Abbr. — 2022-10-04
• They come before ohs — 2022-09-27
• Nav. rank — 2022-05-05
• Runner's midsection? — 2021-09-28
• U.S. Navy O-1: Abbr. — 2021-07-29
• Low-ranking "Star Trek" officer: Abbr. — 2021-06-21
• Lt.'s inferior — 2021-06-13
• Couple of pennies? — 2020-12-26
• Two for dinner? — 2020-08-29
• Capt.'s assistant, maybe — 2020-04-05
• Nation's borders? — 2020-02-20
• Northern borders? — 2019-10-06
• Type units — 2019-08-18
• Non-majority? — 2019-07-24
• Cannes duo — 2019-03-02
• Navy rank below lt. junior grade — 2019-01-23
• Pair of nines? — 2018-12-28
• Starfleet Academy grad. — 2018-11-22
• Naval rank: Abbr. — 2018-10-07
• No-nonsense quartet? — 2018-06-10
• Naval officer: Abbr. — 2018-05-13
• Half of none? — 2018-05-10
• Neuron's ends? — 2017-12-31
• Channel 2? — 2017-07-05
• Em chasers — 2017-06-06
• Naval subordinate: Abbr. — 2017-03-01
• Nav. rank — 2017-02-19
• Naval officer: Abbr. — 2016-11-21
• U.S.N. officer: Abbr. — 2016-10-17
• Chekov, e.g., on "Star Trek": Abbr. — 2016-09-22
• Tennis doubles? — 2016-08-07
• U.S.N. rank — 2016-07-17
• Two of nine? — 2016-06-08
• Coast Guard rank: Abbr. — 2016-05-30
• "Annie" characters — 2016-05-10
• Sinner's heart? — 2016-01-01
• Annapolis grad. — 2015-12-27
• Quartet in "No, No, Nanette" — 2015-11-07
• U.S. Navy O-1: Abbr. — 2015-10-09
• U.S.N.A. grad: Abbr. — 2015-08-19