Moon Phases Not Matching

Why doesn’t the screen lock moon phase widget match the apple weather app moon phase? iPhone Pro 16 iOS 27.0

iPhone 16 Pro, iOS 27

Posted on Sep 26, 2026 6:35 PM

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2 replies

Sep 26, 2026 11:13 PM in response to darciemarie23

6:56 AM on the Lock Screen widget vs 6:55 AM in the Weather app is a very different situation. That is only a 1-minute discrepancy, and it is quite normal.


Why the 1-minute difference occurs


The Moon does not literally have a single universal “moonset time” rounded identically everywhere. The calculated time depends on:

  • the exact geographic coordinates
  • elevation and local horizon
  • atmospheric/refraction assumptions
  • the astronomical calculation and rounding
  • when each Apple interface last refreshed its data


So Apple may calculate the underlying moonset as something like 06:55:xx, with one interface displaying 6:55 AM and another rounding or truncating/updating it as 6:56 AM.


The important point is that 6:55 vs 6:56 does not indicate a display problem or an incorrect Moon phase calculation.


 Check the weather on iPhone - Apple Support (MD)


Moon Phases Not Matching

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