Steps to reproduce:

1. Changes in configuration
   -Zabbix 6.4

• time zone America/Santiago -> set date to 06.09.2025 23:55
• add maintenance three periods:
  1st on 06.09 before midnight
  2nd on 07.09.2025 (doesn't matter what time)
  3rd on 08.09.2025 (as soon as you wish)

Result:
    1st and 3rd maintenance work as predicted.
    2nd doesn't work at all
Expected:
     all 3 working as it should