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NavIC Atomic Clock Failure – ISRO
March 25 , 2026
15 hrs 0 min
20
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- The atomic clock in the IRNSS-1F satellite failed, affecting India’s navigation system NavIC (Navigation with Indian Constellation).
- Atomic clocks are essential for accurate positioning, navigation, and timing services.
- With this failure, the number of functional satellites for NavIC reduced to three, below the required four.
- NavIC is India’s indigenous regional navigation system developed by the Indian Space Research Organisation.
- ISRO plans to use indigenous rubidium atomic clocks in future replacement satellites to strengthen the system.
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