Historical clue formulations

• On-off signs — 2026-08-20
• Green-lights — 2026-06-30
• "Be my guest" and "Go right ahead" — 2026-06-20
• Green-lights — 2026-06-15
• Authorizes — 2026-05-01
• Green-lights — 2026-03-26
• Gives the green light — 2026-02-08
• Gives a thumbs up — 2025-12-07
• Blesses — 2025-10-19
• Gives a "go" — 2025-08-21
• Gives the go-ahead — 2025-07-21
• Go-aheads — 2025-06-08
• Gives the thumbs up — 2025-02-05
• Gives a thumbs up — 2025-01-20
• Gives the green light — 2024-12-23
• Gives the nod — 2024-12-08
• Gives the go-ahead for — 2024-11-04
• Gives a thumbs-up — 2024-10-22
• Green-lights — 2024-03-03
• Licenses, perhaps — 2024-02-03
• Approves — 2024-01-08
• Rubber-stamps — 2023-08-13
• Licenses, say — 2023-06-08
• Gives the thumbs-up — 2023-03-30
• Rubber-stamps — 2022-10-30
• Green-lights — 2022-10-02
• Clears — 2022-04-24
• Gives the nod — 2022-04-20
• Blesses — 2022-01-20
• Stamps, maybe — 2021-12-30
• Gives the thumbs-up — 2021-07-14
• Gives the go-ahead — 2021-06-07
• Gives a thumbs-up — 2021-04-19
• Green-lights — 2021-02-03
• Gives one's seal of approval — 2020-10-18
• Sanctions — 2020-10-14
• Clears — 2020-02-22
• Agrees to — 2018-04-29
• Signs off on — 2018-04-10
• Approves — 2018-02-19
• Green lights — 2017-11-19
• Signs off on — 2017-10-22
• Checks off on — 2017-09-16
• Gives the nod — 2017-09-05
• Lets go — 2017-07-15
• Sanctions — 2017-06-24
• Good-to-go signals — 2017-05-17
• Approvals — 2017-04-17
• Consents to — 2016-07-10
• Clears — 2016-06-25