ચૈત્ર ચડે નહીં ને વૈશાખ ઉતરે નહીં.

caitra caḍē nahīṁ nē vaiśākha utarē nahīṁ.

Literally: Neither rises in Chaitra nor sets in Vaishakh.
What it means: Describes a person who is inconsistent, unreliable, or lacks a firm stance.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1921) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.