The direct point of the sun is 30 degrees west longitude and 0 degrees latitude. What is the solar term at this time?

Solar terms are only related to the latitude of the direct point of the sun. Latitude is 0 (that is, direct to the equator), and solar terms are vernal equinox or autumnal equinox;

Latitude is 23.5 north latitude (tropic of cancer), with summer solstice in the northern hemisphere and winter solstice in the southern hemisphere;

When the latitude is 23.5 degrees south latitude (tropic of Capricorn), the northern hemisphere is the winter solstice and the southern hemisphere is the summer solstice.

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