equinoctial
Concise Oxford English Dictionary © 2008 Oxford University Press:
equinoctial /ˌiːkwɪˈnɒkʃ(ə)l, ˌɛkwɪ-/
▶adjective
- 1 relating to or at the time of the equinox.
- 2 at or near the equator.
'equinoctial' also found in these Oxford entries:

