Sidereal Time Calculator For Any Date, Time and Longitude
PHP Program by Jay Tanner
Local Date
± Y M D (Neg=BC)
Local Time
HH MM SS (00 to 24h)
Local Time Zone Offset
HH MM (Neg/Pos = W/E)
ΔT (Delta T)
2460485.5  0.233576388889   -0.208333333333   +0.000000000000 
Calendar Mode:    Julian             Gregorian
Longitude:  ±Deg.ddd  or  ±D M S (Neg=W)

IMPORTANT: Make sure that the local time, time zone and longitude are correctly matched for the location.
OPTIONAL: NASA Polynomial ΔT estimate = +74 sec = +00h 01m 14s
Double-Click Within Text Area to Select ALL Text
Jay Tanner - PHP Science Labs - 2024 - 1.7