Usum
(dialihkeun ti Musim)
Usum téh salah sahiji babagian utama taun, biasana mah dumasar bentuk iklim nu lega. Ilaharna sataun kabagi jadi opat usum, nyaéta: usum semi, usum panas, usum gugur, jeung usum tiris. Ngan, di Indonésia mah lantaran nganjrek di daérah tropis, mangka ngan dibagi jadi dua usum wungkul, nyaéta: usum ngijih jeung usum halodo.
Ari baheula di Mesir Kuna mah usum téh kabagi jadi tilu usum, nyaéta: musim caah, usum darurat lantaran caah, jeung usum panunéian nu panas.
| Pananggalan | Beulahan bumi | |
|---|---|---|
| Tropis | ||
| April nepi ka Séptémber | usum halodo | |
| Oktober nepi ka Pébruari | usum ngijih | |
| Lebahan kalér | Lebahan kidul | |
| 21 Maret-21 Juni | usum semi | usum gugur |
| 21 Juni-23 Séptémber | usum panas | usum tiris |
| 23 Séptémber-21 Désémber | usum gugur | usum semi |
| 21 Désémber-21 Maret | usum tiris | usum panas |
Usum dunya
édit
Tutumbu luar
édit- (Basa Inggris) The seasons begin at the time of the solstice or equinox
- (Basa Inggris) Solstice does not signal season's start?
- Australian Weather and Seasons Archived 2010-04-16 di Wayback Machine
- When do the Seasons Begin? (from the Bad Astronomer)
- Solstice does not signal season's start (from The Straight Dope)
- Why the Earth has seasons article on h2g2.
- Aboriginal seasons of Kakadu
- Indigenous seasons (Australian Bureau of Meteorology)
- Mt Stirling Seasons Archived 2012-03-02 di Wayback Machine
- Musim info Archived 2013-02-27 di Wayback Machine
- The Lost Seasons
- Melbourne's six seasons Archived 2009-09-19 di Wayback Machine
- The Lengths of the Seasons (numerical integration analysis)
- Earth distance vs tilt
- Tutorial on Earth/Sun Relations and Seasons Archived 2010-03-16 di Wayback Machine