../ dmsp_15_ephemeris_20121124.txt 22-Jun-2023 00:21 109251 dmsp_16_ephemeris_20121124.txt 22-Jun-2023 00:21 109315 dmsp_17_ephemeris_20121124.txt 22-Jun-2023 00:21 109533 dmsp_18_ephemeris_20121124.txt 22-Jun-2023 00:21 109457