Time evolution of selected dimming parameters for the X1.1 flare on 2024 May 9 (no. 29). From top to bottom: (a) GOES 1.0 − 8.0 Å SXR flux (black) and its time derivative (purple); (b) expansion of the dimming area A(t) (black) and the area growth rate, $\dot{A}(t)$ (purple), with the horizontal green dashed line marking when $\dot{A}(t)$ falls below 15% of its maximum value which defines the end of the impulsive phase of the dimming; (c) brightness drop I_drop(t) (black) and its change rate, ${\dot{I}}_{\text{drop}}(t)$ (purple) in base-difference units; (d) positive (blue), negative (red) and total unsigned magnetic flux (black) covered by the dimming regions; (e) corresponding magnetic flux rates, ${\dot{\varphi }}_{+}(t)$ (blue), $|{\dot{\varphi }}_{-}(t)|$ (red), and $\dot{\varphi }$ (black). Vertical dashed, dotted, and solid black lines indicate the start, peak, and end of the flare, respectively. The vertical solid and dashed green lines indicate the peak of $\dot{A}(t)$ and the end of the impulsive phase of the dimming, respectively.