solana-clock is used at run time in 123 crates (of which 1 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 10 crates (of which 3 directly).

Depender (with downloads and own rev deps) solana-clock version
1.1M 546 solana-program =2.1.0
5.5K 23 solana-feature-set =2.1.0
6.0K 2 solana-epoch-schedule dev =2.1.0
6.0K 2 solana-rent dev =2.1.0
5.9K 2 solana-fee-calculator dev =2.1.0