https://github.com/PEDSnet/Data_Models_Public/blob/ac65eeb419d8916b9f18b4284a270d397dc4a1d0/PEDSnet/docs/Conventions Docs/v5.9_PEDSnet_CDM_ETL_Conventions.md?plain=1#L1731
other start_datetimes follow the 00:00:00 convention, is it the intent that this would be different for COHORT?
https://github.com/PEDSnet/Data_Models_Public/blob/ac65eeb419d8916b9f18b4284a270d397dc4a1d0/PEDSnet/docs/Conventions Docs/v5.9_PEDSnet_CDM_ETL_Conventions.md?plain=1#L1731
other start_datetimes follow the 00:00:00 convention, is it the intent that this would be different for COHORT?