Name: Sentinel-3C — Vega C Launch
Start: 2026-09-15T01:21:00Z
Location: ELA-1, Guiana Space Centre

launching the third satellite in the Sentinel-3 constellation, which provides high-accuracy optical, radar and altimetry data for marine and land services.

The launch date is currently targeted for Tuesday, September 15, 2026 at 1:21 AM (UTC).

Fluorescence Explorer (FLEX)

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Provider	Arianespace
Vehicle	Vega C
Location	ELA-1 Guiana Space Centre French Guiana
All dates and times should be submitted in UTC timezone. Use Estimated Date if you don't know the official launch date and time; otherwise, use Window Opens/Closes and/or Planned T-0, which will override the Estimated Date.
— Estimated Date —
Date
— Window Opens —
Date
Time
Launch Date	Tuesday, September 15, 2026
Launch Time	1:21 AM (UTC)
Launch Time (Pad)
— Planned T-0 —
Date	Tuesday, September 15, 2026
Time	1:21 AM (UTC)
— Window Closes —
Date	Tuesday, September 15, 2026
Time	1:21 AM (UTC)

Planetary Science

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