Historical clue formulations

• Gulf of ___, waters that abut Djibouti and Somaliland — 2026-05-16
• Port of Yemen — 2026-01-20
• Mideast port with a natural harbor — 2025-07-12
• Gulf of ___ (waters off the coast of Yemen) — 2023-12-18
• Port of Yemen — 2023-08-21
• Port city that's an anagram of 9-Down — 2023-07-07
• Yemeni seaport — 2022-06-03
• Mideast's Gulf of ___ — 2022-05-25
• Mideast's Gulf of ___ — 2022-05-05
• ___ + anais (baby care brand) — 2022-04-29
• Arabian port — 2022-04-14
• Yemeni port — 2022-01-18
• Arabian gulf port — 2021-11-11
• Mideast locale of Sira Fortress — 2021-09-02
• Main port of Yemen — 2021-08-29
• Mideast port — 2021-06-19
• Mideast's Gulf of ___ — 2020-02-14
• Port SSE of the Suez Canal — 2020-02-06
• Yemeni port — 2020-01-13
• Mideast's Gulf of ___ — 2019-07-23
• City on a gulf of the same name — 2019-06-08
• Port north of the Horn of Africa — 2019-04-18
• Arabian port — 2018-06-01
• City where, according to legend, Cain and Abel are buried — 2018-03-24
• Yemeni port — 2017-11-27
• Mideast's Gulf of ___ — 2017-02-10
• British crown colony from 1937 to 1963 — 2017-02-02
• Gulf of ___ (waters off the coast of Djibouti) — 2017-01-12
• Yemen seaport — 2016-12-04
• Yemeni seaport — 2016-06-12
• Yemen seaport — 2016-01-05
• Yemeni port city — 2015-12-07
• Former British crown colony in the Mideast — 2015-11-29
• Mideast's Gulf of ___ — 2015-11-02
• Yemeni port city — 2015-10-05
• Mideast's Gulf of ___ — 2015-08-25
• Major tanker port — 2014-11-26
• Yemeni port — 2014-09-02
• Mideast's Gulf of ___ — 2014-08-29
• Gulf of ___ — 2014-08-03
• Yemeni port — 2014-05-25
• Port of Yemen — 2014-01-27
• City where some believe Cain and Abel are buried — 2014-01-04
• Yemeni port — 2013-12-09
• Mideast port — 2013-11-12
• Gulf of ___ — 2013-11-03
• Mideast's Gulf of ___ — 2013-04-09
• Mideast oil port — 2013-01-29
• Port of Yemen — 2012-02-13
• Gulf of ___ — 2011-10-16