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pub const MINUTES_PER_HOUR: u128 = 60; pub const SECONDS_PER_MINUTE: u128 = 60; pub const MILLIS_PER_SECOND: u128 = 1000; pub const NANOS_PER_MILLI: u128 = 1_000_000; pub const NANOS_PER_MICRO: u128 = 1000;