Night time vs day time

[ItalianScallion]

Hello,

I have 2 tables, FactTransaction with column TIME_TPA which is a reading time and the other Sunset_Sunrise_TPA with SUNSET SUNRISE column.
I need a new column that checks weather or not the READINGTIME is at night or during the day.

I tried with an this formula but it shows 4pm as night and 12am as day. 

DayCheck = IF(AND(vw_FactTransaction_Hourly[Time_TPA]>= RELATED(Sunset_Sunrise_TPA[Sunrise]), vw_FactTransaction_Hourly[Time_TPA] <= RELATED(Sunset_Sunrise_TPA[Sunset])),"Daytime","Night")

How can I compare these two times so that if TIME_TPA is after SUNSET and before SUNRISE it's nighttime?
Thanks 

EDIT:
Also tried 

DayCheck = IF(AND(TIME(HOUR(vw_FactTransaction_Hourly[Time_TPA]),MINUTE(vw_FactTransaction_Hourly[Time_TPA]),0)>= TIME(HOUR(RELATED(Sunset_Sunrise_TPA[Sunrise])),MINUTE(RELATED(Sunset_Sunrise_TPA[Sunrise])),0), TIME(HOUR(vw_FactTransaction_Hourly[Time_TPA]),MINUTE(vw_FactTransaction_Hourly[Time_TPA]),0) <= TIME(HOUR(RELATED(Sunset_Sunrise_TPA[Sunset])),MINUTE(RELATED(Sunset_Sunrise_TPA[Sunset])),0)),"Daytime","Nighttime")

In an attempt to make it into a time function, no luck, everything but midnight comes out as nighttime lol 

Halp plz

[v-rongtiep-msft]

Hi @ItalianScallion ,

I have some doubt. Each row in vw_FactTransaction_Hourly[Time_TPA] compare to with each row in Sunset_Sunrise_TPA[Sunset]? If in row 1, there is 05:00:00 in vw_FactTransaction_Hourly[Time_TPA] and 23:00:00 in Sunset_Sunrise_TPA[Sunset], What would it output?  The result is "Night"? Could you please provide more details?

How to compare daytime and night?

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