The ZTO jQuery Date Range Picker always displays a dual-month view.
When today falls on the 1st (or early days) of a month, the same date
appears in both panels: a hidden ghost cell (month1, display:none) and
a visible cell (month2). Both carry the real-today CSS class, so .first
picks the hidden one, causing wait_for(visible) to timeout.
Replace DOM-based real-today time extraction with Python datetime
computation. Add _zto_find_visible_day to locate the actually visible
date cell (skipping hidden ghost cells, trying both midnight and
23:59:59 time variants). Fix _zto_flip_to_target_month to use the
same visibility-aware lookup.
Co-Authored-By: Claude <noreply@anthropic.com>
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