getEpochSchedule

curl --request POST \
  --url https://mainnet.helius-rpc.com/ \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getEpochSchedule"
}'

{
  "jsonrpc": "2.0",
  "id": "1",
  "result": {
    "slotsPerEpoch": 8192,
    "leaderScheduleSlotOffset": 8192,
    "warmup": true,
    "firstNormalEpoch": 8,
    "firstNormalSlot": 8160
  }
}