First Block of Each Era - IntersectMBO/cardano-ledger GitHub Wiki
First block of each Era
| Era | Slot Number | Epoch Number | Protocol Version |
|---|---|---|---|
| Byron | 0 | 0 | 1,0 |
| Shelley | 4492800 | 208 | 2,0 |
| Allegra | 16588800 | 236 | 3,0 |
| Mary | 23068800 | 251 | 4,0 |
| Alonzo | 39916975 | 290 | 5,0 |
| 43372972 | 298 | 6,0 | |
| Babbage | 72316896 | 365 | 7,0 |
| 84844885 | 394 | 8,0 | |
| Conway | 133660855 | 507 | 9,0 |