California Codes, Civil Code - CIV, Division 3 — Obligations, Part 2 — Contracts, Title 3 — Interpretation of Contracts, Section 1657
If no time is specified for the performance of an act required to be performed, a reasonable time is allowed. If the act is in its nature capable of being done instantly—as, for example, if it consists in the payment of money only—it must be performed immediately upon the thing to be done being exactly ascertained.
Notes
Sets a reasonable time for required contractual performance when no time is specified. If the required act is inherently capable of immediate performance, including an obligation consisting only of paying money, it must be performed immediately once the exact thing to be done has been ascertained.
Use as reference
Lexinter.net | California Code, Civil Code - CIV § 1657 | https://laws.lexinter.net/codes/california/civil-code/division-3/part-2/title-3/section-1657