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[PZB-1286] VIIRS fire alerts widget x-axis shows "invalid date" - #5277
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For windows under 10 weeks the x-axis kept monthLabel ("Mar") as its
dataKey while formatting ticks as dates, rendering "Invalid date".
Use the ISO `date` key instead.
Also honor the brush's endIndex in getStartEndIndexes (clamped to the
data length) so the right handle actually narrows the chart.
PZB-1286
01painadam
approved these changes
Oct 15, 2026
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The Weekly Fire Alerts widget's x-axis displays "invalid date" when the time-range slider is adjusted. Flagged by Tatiana as donor-visible — noted by a donor supporting fire work.
Steps to Reproduce
Observed Behaviour
The x-axis shows "invalid date" instead of the correct date labels.
Expected Behaviour
The x-axis should show correctly formatted dates for the selected time period.
###Tests
Adjust the time-range slider on the Weekly Fire Alerts widget across several countries and verify the x-axis always shows valid dates.
Hints
Likely a date-parsing bug triggered by a specific slider position or date format edge case. Given the donor visibility, this is worth prioritizing for a fix regardless of general severity ranking.
Reported by: Sarah Carter (1 report)
Airtable cluster: https://airtable.com/appxosPj0F7hthw32/tblDbSDchhSfnl0dT/reco2mErRL0xSvKEv