../ dmsp_15_ephemeris_20220821.txt 22-Jun-2023 00:52 109636 dmsp_16_ephemeris_20220821.txt 22-Jun-2023 00:52 109579 dmsp_17_ephemeris_20220821.txt 22-Jun-2023 00:52 109708 dmsp_18_ephemeris_20220821.txt 22-Jun-2023 00:52 109606