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

Double-Click Within Text Area to Select ALL Text ALL LUNAR PERIGEES AND APOGEES FOR THE YEAR 2022 ================================================ Time Zone UTC+00:00 Dates refer to the modern Gregorian calendar. =================================================================== EVENT Julian Date UTC Calendar Date Time UTC Dist. km ======= ================= =============== =========== ========== Perigee 2459581.450672917 2022-Jan-01-Sat 10:48:58 PM 358025.250 Apogee 2459593.886544812 2022-Jan-14-Fri 09:16:37 AM 405830.764 Perigee 2459609.794153351 2022-Jan-30-Sun 07:03:35 AM 362235.554 Apogee 2459621.606099351 2022-Feb-11-Fri 02:32:47 AM 404932.548 Perigee 2459637.427862133 2022-Feb-26-Sat 10:16:07 PM 367760.875 Apogee 2459649.460206792 2022-Mar-10-Thu 11:02:42 PM 404308.041 Perigee 2459662.488320504 2022-Mar-23-Wed 11:43:11 PM 369724.491 Apogee 2459677.300742246 2022-Apr-07-Thu 07:13:04 PM 404476.641 Perigee 2459689.139858012 2022-Apr-19-Tue 03:21:24 PM 365120.400 Apogee 2459705.036270201 2022-May-05-Thu 12:52:14 PM 405317.011 Perigee 2459717.148584179 2022-May-17-Tue 03:33:58 PM 360285.428 Apogee 2459732.558972449 2022-Jun-02-Thu 01:24:55 AM 406211.013 Perigee 2459745.479079221 2022-Jun-14-Tue 11:29:52 PM 357428.077 Apogee 2459759.766673487 2022-Jun-29-Wed 06:24:01 AM 406581.257 Perigee 2459773.883299397 2022-Jul-13-Wed 09:11:57 AM 357267.202 Apogee 2459786.940371157 2022-Jul-26-Tue 10:34:08 AM 406257.379 Perigee 2459802.219224633 2022-Aug-10-Wed 05:15:41 PM 359839.751 Apogee 2459814.416023004 2022-Aug-22-Mon 09:59:04 PM 405387.426 Perigee 2459830.268344049 2022-Sep-07-Wed 06:26:25 PM 364513.570 Apogee 2459842.115356894 2022-Sep-19-Mon 02:46:07 PM 404517.733 Perigee 2459857.195039758 2022-Oct-04-Tue 04:40:51 PM 369359.043 Apogee 2459869.930399441 2022-Oct-17-Mon 10:19:47 AM 404287.798 Perigee 2459882.102041767 2022-Oct-29-Sat 02:26:56 PM 368320.093 Apogee 2459897.774984080 2022-Nov-14-Mon 06:35:59 AM 404884.907 Perigee 2459909.558117810 2022-Nov-26-Sat 01:23:41 AM 362843.204 Apogee 2459925.513785881 2022-Dec-12-Mon 12:19:51 AM 405841.380 Perigee 2459937.847366929 2022-Dec-24-Sat 08:20:13 AM 358278.171 ======= ================= =============== =========== ========== EVENT Julian Date UTC Calendar Date Time UTC Dist. km ===================================================================

Double-Click Within Text Area to Select ALL Text 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 your 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, England' at Time Zone Offset +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: Friday - August 12, 2022 at 04:20:44 UTC - PHP v7.4.9