(astronomy) A unit of time equal to 86,400 ephemeris seconds (International System of Units).
ephemeris day
| Sci-Tech Dictionary: ephemeris day |
(ə′fem·ə·rəs ′dā)
| 5min Related Video: ephemeris day |
Learn More
 | Julian ephemeris century (astronomy) |
| Robert Thomas Cross |
| Ausonius |
 | How many day on days of a year? Read answer... |
| How long is a day in earth days? Read answer... |
| What day is St Nicholas Day? Read answer... |
Help us answer these
 | Why was the day of Remembrance day chosen? |
| Is veterans day a day of mourning? |
| What day is the day of worship in Buddhism? |
Post a question - any question - to the WikiAnswers community:
Copyrights:
 |
 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
Related answers
- What is an ephemeris?
- Is there an ephemeris for wormholes?
- Where can you find online an ephemeris of wormholes?
- What day is National Pi day?
ADVERTISEMENT
Answer these
- What is the difference between an ephemeris and an almanac?
- What day is the innaguration day?
- What day is Bastille day celebrated on?
Mentioned in
