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Did your program's clock just double speed?
Mainnet slots went from 400 ms to 200 ms (SIMD-0525). Programs that stored time as slots still assume 400 ms, so those deadlines now arrive about twice as soon. Since Alpenglow, Clock.unix_timestamp is set by the leader within a bound.
Live slot speed
mainnet: loading (min — / max —) · legacy assumption 400 ms
- 2026-08-21: 350 ms at slot 440,640,000
- 2026-08-28: 300 ms at slot 442,368,000
- 2026-09-18: 250 ms at slot 447,984,000
- 2026-10-09: 200 ms at slot 454,896,000
Account check
Manual mode
delta vs 400 ms depends on a reference slot; use Account check for dates
Verdict preview for this one field: NOT AFFECTED BY SLOT SPEED
Limits
- This reads account data, not program logic. It cannot know how a program converted durations into slots.
- Field detection is by name. Override by renaming is not available; the kind shown is the heuristic.
- IDL decoding needs an on-chain IDL or a pasted IDL JSON. Pasted IDLs are not put in the URL.
- If you find an affected live protocol, contact its team before posting about it.
Data via Helius RPC · Report metrics