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Monitoring Programs Schedule in Period 73

Twilight Definitions
  • ECT = end of civil evening twilight
  • ENT = end of nautical evening twilight
  • EAT = end of astronomical evening twilight
  • SAT = start of astronomical morning twilight
  • SNT = start of nautical morning twilight
  • SCT = start of civil morning twilight
DateProposalUT WindowDurationInstrument
2026-04-01 73-503 EAT-SAT 00:35 ALFOSC
- 73-017 04:00-SNT 00:15 FIES
- 68-803 00:00-SNT 01:00 ALFOSC
2026-04-02 73-503 EAT-SAT 00:35 ALFOSC
- 73-505 EAT-23 00:55 FIES
- 73-506 02-SAT 00:14 FIES
- 73-017 04:00-SNT 00:15 FIES
2026-04-03 73-503 EAT-SAT 00:35 ALFOSC
- 73-506 EAT-22 00:14 FIES
- 73-501 [EAT]-00:00 00:06 ALFOSC
- 73-501 [EAT]-02:45 00:06 ALFOSC
- 73-501 [EAT]-03:00 00:06 ALFOSC
- 73-501 [EAT]-03:45 00:10 ALFOSC
- 73-501 22:45-[SAT] 00:06 ALFOSC
- 73-501 00:45-[SAT] 00:06 ALFOSC
- 73-501 [EAT]-04:45 00:06 ALFOSC
- 73-501 03:45-[SAT] 00:06 ALFOSC
- 73-501 00:30-[SAT] 00:06 ALFOSC
- 73-501 [EAT]-04:45 00:06 ALFOSC
- 73-501 00:45-[SAT] 00:06 ALFOSC
- 73-501 [EAT]-04:45 00:06 ALFOSC
- 73-017 04:00-SNT 00:15 FIES
2026-04-04 72-510 (EAT-15m)-22:00 00:13 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 02:00-05:00 00:19 FIES
- 73-506 EAT-02 00:40 FIES
- 73-017 04:00-SNT 00:15 FIES
2026-04-05 72-510 (EAT-15m)-23:00 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 22:00-03:30 00:12 FIES
- 73-506 EAT-03 00:40 FIES
- 68-803 05:00-SNT 01:00 ALFOSC
- 73-017 04:00-SNT 00:20 FIES
- 73-017 04:00-SNT 00:15 FIES
2026-04-07 72-510 (EAT-15m)-00:45 00:35 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 03:00-SAT 00:59 FIES
- 73-509 03:00-SNT 01:00 FIES
- 73-017 04:00-SNT 00:20 FIES
- 73-017 04:00-SNT 00:15 FIES
2026-04-11 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 02:30-04:30 00:19 FIES
- 71-501 04:30-SAT 00:14 FIES
- 73-505 EAT-01 00:55 FIES
- 73-501 [EAT]-23:30 00:06 ALFOSC
- 73-501 [EAT]-02:15 00:06 ALFOSC
- 73-501 [EAT]-02:45 00:06 ALFOSC
- 73-501 [EAT]-03:30 00:10 ALFOSC
- 73-501 [EAT]-04:30 00:06 ALFOSC
- 73-501 [EAT]-04:30 00:06 ALFOSC
- 73-501 [EAT]-04:30 00:06 ALFOSC
2026-04-12 72-510 (EAT-15m)-01:30 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 73-501 22:15-[SAT] 00:06 ALFOSC
- 73-501 00:15-[SAT] 00:06 ALFOSC
- 73-501 00:00-[SAT] 00:06 ALFOSC
- 73-501 00:15-[SAT] 00:06 ALFOSC
- 73-501 03:15-[SAT] 00:06 ALFOSC
2026-04-13 72-510 (EAT-15m)-03:40 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 68-803 04:00-SNT 01:00 ALFOSC
2026-04-14 72-510 (EAT-15m)-03:30 00:50 ALFOSC
- 72-510 (EAT-15m)-(SAT+15m) 00:13 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 03:00-SAT 00:19 FIES
- 73-506 EAT-02 00:40 FIES
- 73-001 EAT-01 01:30 FIES
2026-04-15 72-510 (EAT-15m)-01:20 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 01:30-04:30 00:19 FIES
- 71-501 03:00-SAT 00:48 FIES
- 73-506 EAT-02 00:40 FIES
- 73-004 20:00-22:00 00:45 FIES
2026-04-16 72-510 (EAT-15m)-02:00 00:35 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 23:00-04:00 00:14 FIES
- 73-506 02-SAT 00:14 FIES
- 73-509 02:30-SNT 01:00 FIES
- 73-017 03:30-SNT 00:20 FIES
- 73-017 03:30-SNT 00:15 FIES
2026-04-20 72-510 23:30-03:10 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 02:30-SAT 00:14 FIES
- 71-501 EAT-02:30 00:12 FIES
- 73-501 [EAT]-23:00 00:06 ALFOSC
- 73-501 [EAT]-01:45 00:06 ALFOSC
- 73-501 [EAT]-02:00 00:06 ALFOSC
- 73-501 [EAT]-02:45 00:10 ALFOSC
- 73-501 [EAT]-03:45 00:06 ALFOSC
- 73-501 [EAT]-03:45 00:06 ALFOSC
- 73-501 [EAT]-03:45 00:06 ALFOSC
- 73-501 21:45-[SAT] 00:06 ALFOSC
- 73-501 23:45-05:15 00:06 ALFOSC
- 73-501 23:30-[SAT] 00:06 ALFOSC
- 73-501 23:45-[SAT] 00:06 ALFOSC
- 73-501 02:45-[SAT] 00:06 ALFOSC
- 73-501 04:45-[SAT] 00:06 ALFOSC
- 73-509 03:00-SNT 01:00 FIES
2026-04-23 72-510 02:20-(SAT+15m) 00:13 ALFOSC
- 72-510 04:40-(SAT+15m) 00:20 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 02:00-SAT 00:59 FIES
- 73-506 EAT-01 00:40 FIES
- 73-506 EAT-02 00:40 FIES
- 73-017 03:00-SNT 00:20 FIES
- 73-017 03:00-SNT 00:15 FIES
2026-04-27 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 00:30-04:00 00:19 FIES
- 68-803 03:00-SNT 01:00 ALFOSC
- 73-501 [EAT]-22:30 00:06 ALFOSC
- 73-501 [EAT]-01:15 00:06 ALFOSC
- 73-501 [EAT]-01:30 00:06 ALFOSC
- 73-501 [EAT]-02:15 00:10 ALFOSC
- 73-501 [EAT]-03:15 00:06 ALFOSC
- 73-501 [EAT]-03:15 00:06 ALFOSC
- 73-501 [EAT]-03:15 00:06 ALFOSC
- 73-501 21:15-[SAT] 00:06 ALFOSC
- 73-501 23:15-04:45 00:06 ALFOSC
- 73-501 23:00-[SAT] 00:06 ALFOSC
- 73-501 23:15-[SAT] 00:06 ALFOSC
- 73-501 02:15-[SAT] 00:06 ALFOSC
- 73-501 04:15-[SAT] 00:06 ALFOSC
- 73-017 02:30-SNT 00:20 FIES
- 73-017 02:30-SNT 00:20 FIES
2026-04-28 73-506 01-SAT 00:14 FIES
- 73-506 EAT-02 00:40 FIES
- 73-509 02:00-SNT 01:00 FIES
2026-04-30 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 02:00-SAT 00:48 FIES
- 68-803 22:00-05:00 01:00 ALFOSC
- 73-017 02:30-SNT 00:20 FIES
2026-05-01 73-503 EAT-SAT 00:35 ALFOSC
- 73-501 [EAT]-22:15 00:06 ALFOSC
- 73-501 [EAT]-01:00 00:06 ALFOSC
- 73-501 [EAT]-01:15 00:06 ALFOSC
- 73-501 [EAT]-02:00 00:10 ALFOSC
- 73-501 [EAT]-03:00 00:06 ALFOSC
- 73-501 [EAT]-03:00 00:06 ALFOSC
- 73-501 [EAT]-03:00 00:06 ALFOSC
- 73-501 [EAT]-05:00 00:06 ALFOSC
- 73-501 23:00-04:30 00:06 ALFOSC
- 73-501 22:45-[SAT] 00:06 ALFOSC
- 73-501 23:00-[SAT] 00:06 ALFOSC
- 73-501 02:00-[SAT] 00:06 ALFOSC
- 73-501 04:15-[SAT] 00:06 ALFOSC
- 73-017 02:20-SNT 00:20 FIES
2026-05-02 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 EAT-01:30 00:12 FIES
- 73-017 02:20-SNT 00:20 FIES
2026-05-03 72-510 (EAT-15m)-21:45 00:13 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 00:00-03:30 00:19 FIES
- 73-017 02:20-SNT 00:20 FIES
2026-05-05 72-510 (EAT-15m)-23:30 00:50 ALFOSC
- 72-510 (EAT-15m)-23:35 00:35 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 73-506 EAT-01 00:40 FIES
- 73-501 [EAT]-22:00 00:06 ALFOSC
- 73-501 [EAT]-00:45 00:06 ALFOSC
- 73-501 [EAT]-01:00 00:06 ALFOSC
- 73-501 [EAT]-01:45 00:10 ALFOSC
- 73-501 [EAT]-02:45 00:06 ALFOSC
- 73-501 [EAT]-02:45 00:06 ALFOSC
- 73-501 [EAT]-02:45 00:06 ALFOSC
- 73-501 [EAT]-04:45 00:06 ALFOSC
- 73-501 22:45-04:15 00:06 ALFOSC
- 73-501 22:30-[SAT] 00:06 ALFOSC
- 73-501 22:45-[SAT] 00:06 ALFOSC
- 73-501 01:45-[SAT] 00:06 ALFOSC
- 73-501 03:45-[SAT] 00:06 ALFOSC
- 73-017 02:00-SNT 00:35 FIES
2026-05-09 72-510 (EAT-15m)-01:50 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 22:00-02:00 00:14 FIES
- 73-506 EAT-01 00:40 FIES
- 71-501 01:00-SAT 00:59 FIES
- 73-017 01:50-SNT 00:35 FIES
2026-05-10 72-510 (EAT-15m)-23:30 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 00:30-03:30 00:19 FIES
- 73-505 EAT-00 00:55 FIES
- 73-506 00-SAT 00:14 FIES
2026-05-11 72-510 (EAT-15m)-00:25 00:35 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 73-501 [EAT]-21:30 00:06 ALFOSC
- 73-501 [EAT]-00:30 00:06 ALFOSC
- 73-501 [EAT]-00:30 00:06 ALFOSC
- 73-501 [EAT]-01:30 00:10 ALFOSC
- 73-501 [EAT]-02:30 00:06 ALFOSC
- 73-501 [EAT]-02:30 00:06 ALFOSC
- 73-501 [EAT]-02:30 00:06 ALFOSC
- 73-501 [EAT]-04:30 00:06 ALFOSC
- 73-501 22:30-03:15 00:06 ALFOSC
- 73-501 22:00-[SAT] 00:06 ALFOSC
- 73-501 22:30-[SAT] 00:06 ALFOSC
- 73-501 01:30-[SAT] 00:06 ALFOSC
- 73-501 03:30-[SAT] 00:06 ALFOSC
- 73-509 01:00-SNT 01:00 FIES
2026-05-12 72-510 (EAT-15m)-01:35 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 02:30-03:30 00:14 FIES
- 73-505 04-SAT 00:40 FIES
- 73-506 EAT-01 00:40 FIES
- 73-017 01:30-SNT 00:35 FIES
2026-05-13 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 23:00-03:00 00:19 FIES
2026-05-14 72-510 (EAT-15m)-04:10 00:13 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 01:00-SAT 00:48 FIES
- 73-505 04-SAT 00:40 FIES
2026-05-15 72-510 (EAT-15m)-23:30 00:50 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 73-506 03-SAT 00:40 FIES
- 73-501 [EAT]-00:00 00:06 ALFOSC
- 73-501 [EAT]-00:15 00:06 ALFOSC
- 73-501 [EAT]-01:00 00:10 ALFOSC
- 73-501 [EAT]-04:00 00:06 ALFOSC
- 73-501 22:00-03:30 00:06 ALFOSC
2026-05-16 72-510 (EAT-15m)-01:25 00:50 ALFOSC
- 72-510 (EAT-15m)-00:10 00:35 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 73-506 EAT-01 00:40 FIES
- 73-501 [EAT]-02:00 00:06 ALFOSC
- 73-501 [EAT]-02:00 00:06 ALFOSC
- 73-501 [EAT]-02:00 00:06 ALFOSC
- 73-501 21:45-[SAT] 00:06 ALFOSC
- 73-501 22:00-[SAT] 00:06 ALFOSC
- 73-501 01:00-[SAT] 00:06 ALFOSC
- 73-501 03:15-[SAT] 00:06 ALFOSC
2026-05-20 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 01:00-SAT 00:19 FIES
- 73-505 04-SAT 00:40 FIES
- 73-506 EAT-01 00:40 FIES
- 73-509 00:30-SNT 01:00 FIES
2026-05-22 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 22:30-02:30 00:19 FIES
- 73-506 04-SAT 00:40 FIES
- 73-004 01:00-04:30 01:30 ALFOSC
2026-05-24 72-510 02:35-03:30 00:13 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 00:30-04:30 00:14 FIES
- 73-501 [EAT]-23:30 00:06 ALFOSC
- 73-501 [EAT]-23:45 00:06 ALFOSC
- 73-501 [EAT]-00:30 00:10 ALFOSC
- 73-501 [EAT]-01:30 00:06 ALFOSC
- 73-501 [EAT]-01:30 00:06 ALFOSC
- 73-501 [EAT]-01:30 00:06 ALFOSC
- 73-501 [EAT]-03:30 00:06 ALFOSC
- 73-501 [EAT]-03:00 00:06 ALFOSC
- 73-501 [EAT]-04:30 00:06 ALFOSC
- 73-501 [EAT]-[SAT] 00:06 ALFOSC
- 73-501 00:30-[SAT] 00:06 ALFOSC
- 73-501 02:30-[SAT] 00:06 ALFOSC
- 73-501 04:15-[SAT] 00:06 ALFOSC
- 73-017 01:00-SNT 00:40 FIES
2026-05-25 72-510 03:10-(SAT+15m) 00:20 ALFOSC
- 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 00:00-SAT 00:59 FIES
- 71-501 EAT-00:30 00:12 FIES
- 73-505 04-SAT 00:40 FIES
2026-05-26 73-503 EAT-SAT 00:35 ALFOSC
- 73-506 03-SAT 00:40 FIES
- 73-506 EAT-00 00:40 FIES
- 73-509 00:30-SNT 01:00 FIES
2026-05-27 73-503 EAT-SAT 00:35 ALFOSC
- 73-506 00-SAT 00:14 FIES
- 73-509 00:00-SNT 01:15 FIES
2026-05-28 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 22:00-02:00 00:19 FIES
- 73-505 03-SAT 00:40 FIES
- 73-509 00:00-SNT 01:15 FIES
- 73-017 01:00-SNT 00:50 FIES
2026-05-30 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 EAT-01:00 00:14 FIES
- 73-506 EAT-00 00:40 FIES
- 73-509 00:00-SNT 01:00 FIES
- 71-501 23:30-SAT 00:48 FIES
2026-05-31 73-503 EAT-SAT 00:35 ALFOSC
- 71-501 00:00-02:30 00:19 FIES
- 73-506 04-SAT 00:40 FIES
- 73-501 [EAT]-23:00 00:06 ALFOSC
- 73-501 [EAT]-23:15 00:06 ALFOSC
- 73-501 [EAT]-00:00 00:10 ALFOSC
- 73-501 [EAT]-01:00 00:06 ALFOSC
- 73-501 [EAT]-01:00 00:06 ALFOSC
- 73-501 [EAT]-01:00 00:06 ALFOSC
- 73-501 [EAT]-03:00 00:06 ALFOSC
- 73-501 [EAT]-02:30 00:06 ALFOSC
- 73-501 [EAT]-04:15 00:06 ALFOSC
- 73-501 [EAT]-[SAT] 00:06 ALFOSC
- 73-501 00:00-[SAT] 00:06 ALFOSC
- 73-501 02:15-[SAT] 00:06 ALFOSC
- 73-501 03:45-[SAT] 00:06 ALFOSC
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