../ dmsp_15_ephemeris_20200511.txt 22-Jun-2023 00:43 109490 dmsp_16_ephemeris_20200511.txt 22-Jun-2023 00:43 109587 dmsp_17_ephemeris_20200511.txt 22-Jun-2023 00:43 109649 dmsp_18_ephemeris_20200511.txt 22-Jun-2023 00:43 109551