Inge Lehmann Day

Frequency:
Every
May 13
Inception Year:
2015
Hashtags:
References:
sciencefiction-nastragull.blogspot.com/…/may-13th-inge-lehmann-d…
x.com/earthmagazine/status/598469690239881216

This day occurs annually on the 13th of May.

May 2025

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