Puerto Princesa Underground River Day (Philippines)

Frequency:
Every
Nov 11
Inception Year:
2014
Hashtags:
References:
pna.gov.ph/articles/1053164
x.com/PIADesk/status/1458706063146958850
nationaltoday.com/puerto-princesa-underground-river-day/

This day happens annually on November 11th.

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