🌟 A stellium forms when 3 or more of the tracked planets (Sun, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto — Moon excluded) are all within mutual conjunction orb of each other at the same time. Any planet joining, leaving, or the cluster splitting/merging starts a new episode.
3
☉☿♂3-planet stellium
Surya, Budha, Mangala
Formed Jan 15, 1917 · 10:00:46 EST
Broke up Jan 18, 1917 · 13:31:54 EST
3
☉♂⛢3-planet stellium
Surya, Mangala, Uranus
Formed Jan 23, 1917 · 11:13:09 EST
Broke up Feb 17, 1917 · 04:52:25 EST
4
☉☿♀♂4-planet stellium⭐ largest this window
Surya, Budha, Shukra, Mangala
Formed Mar 14, 1917 · 09:33:37 EST
Broke up Apr 5, 1917 · 23:14:59 EST
3
☉♀♂3-planet stellium
Surya, Shukra, Mangala
Formed Apr 5, 1917 · 23:14:59 EST
Broke up Apr 17, 1917 · 18:06:21 EST
3
☿♂♃3-planet stellium
Budha, Mangala, Guru
Formed May 22, 1917 · 19:50:31 EST
Broke up Jun 24, 1917 · 07:06:45 EST
3
♂♄♆3-planet stellium
Mangala, Shani, Neptune
Formed Sep 9, 1917 · 05:13:47 EST
Broke up Oct 17, 1917 · 10:10:18 EST
Computed for Columbus, Ohio, America (United States) — exact-instant orb events (jd_utc), MariaDB-backed, 1900–2500.