Testing UTC Time to slots conversion

[carbolymer]

Testing of #5130

It's not a final form of command line interface

[carbolymer]

So far appears to be not working correctly in previous eras. Querying slot around block 5385759 in Allegra era:

$ cabal exec cardano-cli -- calculateslottime --mainnet --socket-path ../network-mainnet/node.socket --utc-time "2021-02-24T22:48:45Z"                                                                                                     
CalculateSlotTimeCmd' (Just (SocketPath {unSocketPath = "../network-mainnet/node.socket"})) (AnyConsensusModeParams (CardanoModeParams (EpochSlots {unEpochSlots = 21600}))) Mainnet 2021-02-24 22:48:45 UTC
SLOTNO
SlotNo 22640634

Expected value: 22637034 via https://cardanoscan.io/block/5385759

EDIT: It appears that timezone might get mixed up somewhere, and if I shift the time by 1h, the returned result is correct now:

$ cabal exec cardano-cli -- calculateslottime --mainnet --socket-path ../network-mainnet/node.socket --utc-time "2021-02-24T21:48:45Z"
CalculateSlotTimeCmd' (Just (SocketPath {unSocketPath = "../network-mainnet/node.socket"})) (AnyConsensusModeParams (CardanoModeParams (EpochSlots {unEpochSlots = 21600}))) Mainnet 2021-02-24 21:48:45 UTC
SLOTNO
SlotNo 22637034

My machine uses Europe/Warsaw timezone, which is UTC+1 in winter, which may explain the discrepancy.

[carbolymer]

Babbage era - for UTC+2 time difference

CalculateSlotTimeCmd' (Just (SocketPath {unSocketPath = "../network-mainnet/node.socket"})) (AnyConsensusModeParams (CardanoModeParams (EpochSlots {unEpochSlots = 21600}))) Mainnet 2023-04-24 09:12:42 UTC
SLOTNO
SlotNo 90761271

https://cardanoscan.io/block/8687402

[carbolymer]

Byron era - for UTC+2 difference:

cabal exec cardano-cli -- calculateslottime --mainnet --socket-path ../network-mainnet/node.socket --utc-time "2017-09-28T21:38:11Z"
CalculateSlotTimeCmd' (Just (SocketPath {unSocketPath = "../network-mainnet/node.socket"})) (AnyConsensusModeParams (CardanoModeParams (EpochSlots {unEpochSlots = 21600}))) Mainnet 2017-09-28 21:38:11 UTC
SLOTNO
SlotNo 21580

https://cardanoscan.io/block/21567