Lunar Perigees and Apogees Calculator For the 8999-Year Span From  1000 AD  to  9998 AD Built Around the NASA/JPL Horizons API PHP Program by Jay Tanner

Year                    Time Zone  UTC                   Distance Units Optional Location Label For the Given Time Zone

Double-Click Within Text Area to Select ALL Text ALL LUNAR PERIGEES AND APOGEES FOR THE YEAR 2024 ================================================ Time Zone UTC+00:00 Dates refer to the modern Gregorian calendar. =================================================================== EVENT Julian Date UTC Calendar Date Time UTC Dist. km ======= ================= =============== =========== ========== Apogee 2460311.141718506 2024-Jan-01-Mon 03:24:04 PM 404873.058 Perigee 2460322.936170310 2024-Jan-13-Sat 10:28:05 AM 362283.162 Apogee 2460338.836767186 2024-Jan-29-Mon 08:04:57 AM 405751.139 Perigee 2460351.282208208 2024-Feb-10-Sat 06:46:23 PM 358095.724 Apogee 2460366.113063829 2024-Feb-25-Sun 02:42:49 PM 406302.678 Perigee 2460379.790250885 2024-Mar-10-Sun 06:57:58 AM 356894.749 Apogee 2460393.146025363 2024-Mar-23-Sat 03:30:17 PM 406305.952 Perigee 2460408.239344354 2024-Apr-07-Sun 05:44:39 PM 358841.452 Apogee 2460420.584739599 2024-Apr-20-Sat 02:02:02 AM 405650.225 Perigee 2460436.414378681 2024-May-05-Sun 09:56:42 PM 363145.542 Apogee 2460448.288190885 2024-May-17-Fri 06:55:00 PM 404675.589 Perigee 2460463.797186121 2024-Jun-02-Sun 07:07:57 AM 368072.420 Apogee 2460476.065648082 2024-Jun-14-Fri 01:34:32 PM 404116.163 Perigee 2460488.983686360 2024-Jun-27-Thu 11:36:31 AM 369252.094 Apogee 2460503.842804539 2024-Jul-12-Fri 08:13:38 AM 404399.749 Perigee 2460515.742145058 2024-Jul-24-Wed 05:48:41 AM 364895.435 Apogee 2460531.568075283 2024-Aug-09-Fri 01:38:02 AM 405327.737 Perigee 2460543.714465262 2024-Aug-21-Wed 05:08:50 AM 360183.869 Apogee 2460559.129127523 2024-Sep-05-Thu 03:05:57 PM 406229.205 Perigee 2460572.061661612 2024-Sep-18-Wed 01:28:48 PM 357282.459 Apogee 2460586.330441431 2024-Oct-02-Wed 07:55:50 PM 406515.274 Perigee 2460600.539851456 2024-Oct-17-Thu 12:57:23 AM 357178.983 Apogee 2460613.459953031 2024-Oct-29-Tue 11:02:20 PM 406141.869 Perigee 2460628.974062273 2024-Nov-14-Thu 11:22:39 AM 360122.005 Apogee 2460641.001420335 2024-Nov-26-Tue 12:02:03 PM 405281.351 Perigee 2460657.061332550 2024-Dec-12-Thu 01:28:19 PM 365383.562 Apogee 2460668.810409614 2024-Dec-24-Tue 07:26:59 AM 404445.277 ======= ================= =============== =========== ========== EVENT Julian Date UTC Calendar Date Time UTC Dist. km ===================================================================

NOTES: [1] Occasionally a time-out may occur if the JPL Horizons server is temporarily unavailable or too busy and an error occurs. If such a crash or hang-up does occur, simply refresh and try again. There are times when it gets a bit glitchy and it can be tricky to determine if it's the program or the JPL server where the problem lies. Patience is key. [2] This lunar perigee and apogee ephemeris calculator spans some 8999 years from 1000 AD to 9998 AD. The program is written in PHP v7.4.9 and makes internal calls to the NASA/JPL Horizons API v1.1 [3] Julian Dates, Day Numbers and Calendar Dates: Julian Dates (JD) and Calendar Dates: JD < 2299160.5 = Refers to Old-Style Julian Calendar Dates JD >= 2299160.5 = Refers to Modern Gregorian Calendar Dates Dates up to 1582-Oct-04-Thu refer to the Julian calendar. Dates from 1582-Oct-15-Fri refer to the Gregorian calendar. The date following 1582-Oct-04-Thu was 1582-Oct-15-Fri, the official first date on our modern Gregorian calendar system. Technically speaking, there are no calendar dates in the range from 1582-Oct-05-Fri to 1582-Oct-14-Sun because those 10 dates were dropped from the calendar during the Julian to Gregorian calendar transition to bring dates of the seasons back into alignment with the sun and the rule for leap year was changed to prevent the previous calendar error from recurring. Given JD = General Julian Date, then the Julian Day Number corresponding to that date on the calendar is: JDNum = floor(JD + 0.5) The Julian Day Number is always a positive integer value serving as a unique serial number for every date on the calendar and holds the calendar date and the day of the week information. The Julian Date holds the calendar date and the day of the week with the fractional part holding the time of day information. For the day of the week (DoW) index corresponding to any Julian Date (JD), or Julian Day Number (JDNum), let the day of the week be indicated by a numerical index DoW in the range from 0=Sun to 6=Sat. DoW = (floor(JD + 0.5) + 1) mod 7 or DoW = (JDNum + 1) mod 7 Where DoW: 0=Sun, 1=Mon, 2=Tue, 3=Wed, 4=Thu, 5=Fri and 6=Sat The JDNum and DoW formulas apply to both the old Julian and the modern Gregorian calendar systems. [4] If a perigee or apogee event occurs near the beginning of a month, that month may have two perigees or two apogees, but never two of both. This is because the lunar orbital months, about 27.32 days, are shorter than the calendar months which range from 28 to 31 days. In some rare cases it is possible for February to have only one single event during the month such as only one perigee or one apogee and not both. [5] UT1 = Old Universal Time Scale (Solar Based). Old previous UT time scale used for years up to 1961. UTC = Coordinated Universal Time Scale (Atomic Based). Newer UT scale used from 1962 to date. World times are now based on this standard with leap seconds applied to maintain civil time, based on atomic time, in close sync with the mean sun. LT = Local Time for the given time zone based on the given +/− HH:MM offset. Time Zone Offset Convention: West of Greenwich, time zone offsets are negative. East of Greenwich, time zone offsets are positive. [6] Standard times are assumed. To adjust for Daylight Saving or Summer Time, add 1 hour to the standard times taking care to watch for any change of date -OR- subtract 1 hour from the time zone offset, which will automatically handle any date change. For example, the time zone offset for Eastern Standard Time (EST) is normally -5 hours. However, when Eastern Daylight Time (EDT) is in effect, use a time zone offset of -4 hours instead. The computed times will be in EDT and automatically handle any date changes. [7] There is an optional location label that can be applied to the computed table for reference. However, any label should match the indicated time zone so as to be accurate and make sense. The label can consist of any printable plain-text string and defaults to 'Greenwich' at Time Zone Offset UTC+00:00. [8] This program implements a cookie to store and recall the year and other interface settings between calls. It does not track, monitor or perform any other activity. If you navigate away and come back later, the interface settings stored in the cookie will be recalled from your last visit. Each call refreshes the cookie for up to 7 days recall. *************************************************************** *************************************************************** API VERSION: 1.1 API SOURCE: NASA/JPL Horizons API *************************************************************** Revised: July 31, 2013 Moon / (Earth) 301 GEOPHYSICAL DATA (updated 2018-Aug-15): ***************************************************************

Download PHP 7 Source Code For This Program Program by Jay Tanner Revised: Monday - March 27, 2023 at 05:05:30 UTC - PHP v7.4.9