A supermoon occurs when the moon becomes full the same day it reaches its perigee, its closest point to Earth in its monthly orbit.
Blue moon, PAGASA said, refers to the second of two full moons occurring in the same month.
Besides another full moon on January 31, that moon will also be a Supermoon and a total lunar eclipse.
January ends with another supermoon that's also a blue moon - the term for the second full moon within a month.
Nichols-Yehling says a supermoon appears 14 percent bigger and 30 percent brighter. On Jan. 31, the moon will rise at 4:54 p.m. and be visible for almost 10 hours.
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If skies are clear, Bonadurer will bring the museum's telescopes to the roof of the Urban Ecology Center at Riverside Park, 1500 E. Park Place, from 5:30 a.m.to 7 a.m. on January 31 for anyone who wants to see the blue moon total eclipse.
Beach shack operators had complained about a lack of warning earlier this month, after a combination of cyclone Ockhi and Supermoon wrecked havoc on the beaches, with the rising water damaging several beach shacks and eroding beach stretches, popular with tourists. For example in US Mountain time (MST), the eclipse will begin at 4:48 AM, but as the full eclipse winds down, the moon will already be dipping below the horizon.
According to the Space Sciences and Astronomy Section of Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), today's supermoon was visible at 10:24 a.m.
It will be the largest moon that appears in the sky this year. It was the closest approach to Earth since 1948. The moon will be blocked out by the earth's shadow. A third supermoon will happen January 31. If you want the best view of the moon, get as far away from ambient light as possible.