Samsung Calendar Icon Shows Wrong Date. Setting icons to default should fix it. Select the plus icon in the bottom left corner, next to “other calendars.”.
This help content & information general help center experience. If you open your calendar app now, then close the app.
Sometimes, A Simple Reboot Can.
Set time zone automatically using current location is checked.
The Default Icon Pack Will Change The Icon To The Current Date, Custom Icon Packs May Or May Not Update The Icon To The Correct Date.
Temporarily setting the time and date manually will allow your calendar events to behave normally.
The Reason The Google Calendar App Icon Does Not Display The Current Date Is That The Default “Launcher” On Your Android Phone Does Not Support This Feature.
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Then Check The Edge Panel, Will It Still On 16Th?
Or it updates to today's date?
Delete/Disable Your Custom Icon Pack.
May be to do with the theme / icon pack you are using ?