getEpochInfo

curl --request POST \
  --url https://mainnet.helius-rpc.com/ \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getEpochInfo",
  "params": [
    {
      "commitment": "finalized",
      "minContextSlot": 1000
    }
  ]
}'

{
  "jsonrpc": "2.0",
  "id": "1",
  "result": {
    "absoluteSlot": 166598,
    "blockHeight": 166500,
    "epoch": 27,
    "slotIndex": 2790,
    "slotsInEpoch": 8192,
    "transactionCount": 22661093
  }
}